The Colbert Report Season 9, Episode 30: Sean Carroll

Ben Folds Five

Paul Ryan tiptoes around tax plan costs, U.S. prison labor threatens small business, Iran's presidential aides visit Costco, and Ben Folds Five explains their album title.

Jorge Ramos

Stephen releases "America Again," pastors endorse politicians on Pulpit Freedom Sunday, the Romney camp praises Obama's rhetoric, and Jorge Ramos talks immigration policy.

Kenny Rogers

America meets Mitt Romney for the first time, George Will points out Obama's racial advantage, doctors treat low testosterone, and Kenny Rogers recounts his music career.

Dr George Church

Mitt Romney pledges to defund PBS, Chris Matthews berates Barack Obama, Pennsylvania rules against voter ID laws, and Harvard geneticist George Church explores DNA.

Mark Kelly

Lower unemployment rates prompt GOP conspiracy theories, rich Americans want Obama's respect, World of Warcraft shapes a state campaign, and Mark Kelly talks mice in space.

Morrissey

Barack Obama seeks "obsessive" supporters, the Russian Church blesses the North Pole, Mitt Romney vaguely bullies four countries, and Morrissey slams the British Royal Family.

Naomi Wolf

7-Eleven and Pizza Hut participate in politics, doctors prescribe Adderall for bad test scores, bears invade America's malls, and Naomi Wolf sheds light on female anatomy.

Chrystia Freeland

Joe Biden debates Paul Ryan, Martian Obama rumors surface, Stephen argues with Stephen over Mitt Romney's conservative credentials, and Chrystia Freeland talks "Plutocrats.

Evan Thomas

Red Bull sponsors a record sky dive, the EU receives the Nobel Peace Prize, Florida deals with a marauding monkey, and Evan Thomas reveals President Eisenhower's views on war.

Cory Booker

CNN enhances debate viewing, Emily Bazelon talks affirmative action, Paul Ryan pretends to volunteer, and Mayor Cory Booker explores party platforms and social media.

Tyler Perry

Mitt Romney's Benghazi accusations backfire, two-parent households fix gun problems, Congressman Scott DesJarlais flip-flops on abortion, and Tyler Perry talks "Madea.

The Killers

A squirrel votes for Mitt Romney, a farmer puts candy in cow feed, Stephen reports on the world's only Corn Palace, and The Killers discuss their clean-cut reputation.

Donald Sadoway

Colin Small trashes voter registrations, CEOs threaten personnel over the election, Andrew Cuomo seeks to decriminalize pot, and Donald Sadoway shares his battery brainchild.

John Grisham

Mitt Romney's presidential smile wins out, undecided voters skip the debates, Lance Armstrong's doping taints his charity, and John Grisham writes about crooked lawyers.

Anthony Everitt

Donald Trump wants Barack Obama's passport papers, Fox News rehashes the Benghazi attacks, Richard Mourdock justifies rape pregnancies, and Anthony Everitt talks Rome.

Mitch Daniels

Ovulation cycles sway female voting, Tom Hanks concocts neutral Halloween costumes, and Indiana Governor Mitch Daniels talks about his book, "Keeping the Republic.

Lilly Ledbetter

Hurricane Sandy wreaks havoc on New Jersey, Mitt Romney hosts a relief rally, Donald Trump cuts Obama some slack, and Lilly Ledbetter explores gender pay discrimination.

David Byrne & St. Vincent

Michael Bloomberg issues post-Sandy travel mandates, Mitt Romney sways Billy Graham on Mormonism, and music marvel David Byrne teams up with St. Vincent.

Nate Silver

Colbert Super PAC inspires Mitt Romney, Sasha Issenberg talks data-driven politics, Joe Scarborough doubts liberal math models, and Nate Silver reviews election statistics.

Election 2012: A Nation Votes, Ohio Decides; The Re-Presidenting of America: Who Will Replace Obama? '12

America snubs the nice Romney boy and picks Obama, Andrew Sullivan sheds light on the election, and Joe Donnelly beats Richard Mourdock in Indiana.

Doris Kearns Goodwin

Liberals and conservatives taint the election, Bill O'Reilly blames Romney's loss on non-whites, wind turbines affect mental health, and Doris Kearns Goodwin recites history.

Rachel Maddow

New York experiences a nor'easter, an Albany strip club claims to sell art, platonic friends learn the scientific truth, and Rachel Maddow talks election night.

Ken Burns

CIA Director David Petraeus steps down after an affair, Karl Rove faces angry benefactors, Jon Stewart assists Colbert Super PAC, and Ken Burns shares "The Central Park Five.

Newt Gingrich

The media weighs presidential nominees for 2016, Sonia Sotomayor crushes girlish pipe dreams, and Newt Gingrich admits he guessed wrong about the election.

Tony Kushner

"America Again" offends Canadians, Wall Street chucks its weakest link, Christopher Steiner reviews computer trading, and screenwriter Tony Kushner talks "Lincoln.

Chris Stringer

Campbell's promotes soups for millennials, the Petraeus scandal escalates, meth protects against influenza, and Chris Stringer talks primitive humans.

Jake Tapper

Shoppers break Black Friday records, the Supreme Court deliberates copyright law, Pope Benedict XVI modifies the nativity, and Jake Tapper discusses the Afghanistan War.

Dolly Parton

Police bust a Canadian for lying about Santa, congressional Republicans abandon Grover Norquist, Reihan Salam describes Reagan's tax plan, and Dolly Parton promotes literacy.

Frank Oz

Powerball sales skyrocket, Fox News explains why women can't get married, Harry Reid tries to curb filibusters, and Frank Oz talks Muppets.

Ian McKellen

The Report hosts Hobbit Week, safer streets weaken a Republican wedge issue, medical grade sheds replace nursing homes, and Sir Ian McKellen prefers Gandalf the Grey.

Martin Freeman

Hobbit Week continues with Bilbo Baggins, testosterone gels trigger family hair growth, morning sickness socks Kate Middleton, and Martin Freeman talks TV roles and Tolkien.

Andy Serkis

Hobbit Week honors Denny's, the Senate votes down universal disability rights, and Andy Serkis compares "The Lord of the Rings" Gollum to "The Hobbit" Gollum.

Peter Jackson

Hobbit Week ends, Stephen gets the Madame Tussauds treatment, and Peter Jackson receives clarification on Tolkien lore.

Diana Krall

Fans lobby for Stephen's Senate appointment, David Petraeus declines a presidential proposal from Roger Ailes, and Diana Krall resists jazz standards.

Malcolm Gladwell

Budget deal talks hit a wall, North Korea unearths a unicorn lair, California's ex-gay therapy ban meets resistance, and Malcolm Gladwell chats about man's best friend.

Mandy Patinkin

"America Again" defeats Papa Bear's bestseller, Jeff Bingaman gives Stephen a Senate how-to, Fox News attacks the 9/11 site mosque, and Mandy Patinkin talks national security.

Simone Campbell

Rockers raise money for Hurricane Sandy victims, Vince Gilligan leaks "Breaking Bad" footage, Colbert Super PAC money finds a home, and Simone Campbell talks social justice.

Jimmy Wales

Republicans agree to tax the wealthy, a coin solves the debt ceiling debate, Bill O'Reilly insults Asians, and Jimmy Wales shares Wikipedia's next steps.

Chris Kluwe

The Forever Stamp skyrockets in value, blood transfers boost health, the Senate looks into "Zero Dark Thirty," and Chris Kluwe defends same-sex marriage.

Neil Shubin

Idaho builds a firearms village, the NRA solves gun violence with more guns, wheat addiction spirals, and Neil Shubin explores humans' shared history with rocks.

Ben Gibbard

A man makes love to a couch, Obama flaunts his testosterone-filled Cabinet, Kevin Garnett hassles Carmelo Anthony, and musician Ben Gibbard grows up.

Piers Morgan

Joe Biden develops gun law recommendations, Ted Nugent references Rosa Parks, a nonprofit disputes Vitaminwater, and Piers Morgan talks gun control.

Jared Diamond

Lance Armstrong spends hours with Oprah, Stephen runs an Extra Special Report on Florida's mystery monkey, and Jared Diamond examines traditional New Guinea culture.

Tom Brokaw

HSBC launders cartel money, Matt Taibbi chews out big banks, Pat Robertson educates "slatternly" wives, and Tom Brokaw tells the plight of second presidential terms.

Akhil Reed Amar

Subway cons consumers, President Obama tightens gun control, Megyn Kelly reveals her porn name, and Akhil Reed Amar shares his book, "America's Unwritten Constitution.

Ta-Nehisi Coates

Obama launches the Presidential Pride Parade, Kate Middleton contaminates America, and Ta-Nehisi Coates reflects on Obama's second inauguration.

Kathryn Bigelow

Obama obscures America's hopelessness in his speech, Republicans pursue advanced redistricting, Dustin Hoffman shrinks his cast, and Kathryn Bigelow talks "Zero Dark Thirty.

Sally Field

Beyonce-Gate riles the media, Ayn Rand admirers find love, Virginia Republicans surprise Democrats with new districts, and Sally Field describes her character in "Lincoln.

Tavi Gevinson

France sends troops into Mali, Edward Berenson outlines French martial history, Hillary Clinton answers questions about Benghazi, and Tavi Gevinson chats about "Rookie.

Michael Shellenberger

The TSA abandons nude scanners, Australia and conservatives cope with climate change, North Korea goes after America, and Michael Shellenberger debates energy sources.

George Saunders

Iran launches a monkey into space, states work to nullify Obama's gun grab, Cliff Sloan explains supreme law, Gitmo stays open, and George Saunders boasts about short stories.

Bill Gates

Gay men stress less, Paul Clement defends DOMA in court, the KKK drops its racist message, and Bill Gates shares global health updates.

Matthew Guerrieri

Super Bowl ads release teasers, Gatorade does away with BVO, a clever crow uses utensils, and Matthew Guerrieri explores Beethoven's cultural impact.

Sonia Sotomayor

A blackout stalls the Super Bowl, Senate members tackle immigration reform, Obama claims to enjoy skeet shooting, and Justice Sonia Sotomayor details "My Beloved World.

Julie Andrews

A parking lot covers up royal remains, CBS brings unemployment to reality TV, Californians thank a hatchet-armed hitchhiker, and Julie Andrews responds to kids' book critics.

Lawrence Wright

Lobbyists try to save the penny, Elizabeth Colbert Busch takes on 16 GOP candidates, and Lawrence Wright confirms abuse within the Church of Scientology.

Benh Zeitlin

A snowstorm slams the Northeast, Senator Stacey Campfield homes in on kids' sexuality, Facebook promotes hookups, and Benh Zeitlin explores Louisiana's Bathtub country.

Garry Wills

The Bush family gets hacked, Pope Benedict becomes the first pope to resign in 717 years, Father Jim Martin details papal appointment, and Garry Wills talks priests.

Roger Hodge

The GOP holds a conference to self-reflect, Karl Rove targets Tea Partiers, Steven Seagal trains volunteer gun posses, and Roger Hodge touts Southern literature.

Dave Grohl

President Obama focuses on the middle class and infrastructure, Marc Rubio suffers from dry mouth, and Dave Grohl relives rock 'n' roll history.

Gavin Newsom

A fertility feast leads to Valentine's Day, the Obama administration targets S&P, and "Citizenville" author Gavin Newsom brings government into the digital age.

Emily Bazelon

A meteor streaks over Russia, Detroit gleans a libertarian investor, Obama goes golfing with Tiger Woods, and Emily Bazelon explores the culture of bullying.

David Goldhill

The U.K. responds to a horse meat scare, Alexi Lalas assesses soccer match fixing, Norway celebrates firewood, and David Goldhill critiques health insurance.

Lil Buck

A rumor links Chuck Hagel to a made-up Islamic group, for-profit incarceration teams up with football, MTV cons BET Twitter fans, and Lil Buck explains jookin.

Simon Garfield

Michelle Obama crashes the Oscars, the CDC researches gun violence, sex scandal gossip plagues the Vatican, and Simon Garfield endorses handmade maps.

Dr. Michio Kaku

Pope Benedict shares the Vatican with his successor, Jeremy Bird disrupts the natural order in Texas, Al Qaeda evades drone attacks, and Michio Kaku tracks asteroid paths.

Paola Antonelli

Stephen endorses Halls cough drops, the government bugs Khalid Sheikh Mohammed's trial, John Kerry makes a case for dimwits, and Paola Antonelli shares the future of design.

Jon Favreau

Pat Robertson confirms that demons occupy garments, shops sell Pope Benedict XVI memorabilia, federal spending cuts loom, and Jon Favreau describes speechwriting methods.

Kirk Bloodsworth

Obama confuses "Star Wars" with "Star Trek," Stephen investigates scallop gonad research, Texas reconsiders gun training, and Kirk Bloodsworth opposes the death penalty.

James Franco

Hugo Chavez passes away, Obama travels to Israel, Michael Oren discusses Iran, married couples retreat to Mars, and James Franco talks "Oz.

Brendan O'Connell

The media introduces "Snowquester," Alabama calls the Voting Rights Act into question, Michael Bloomberg bans soda deliveries, and Wal-Mart inspires Brendan O'Connell.

John Sexton

Rand Paul talks for 13 hours, North Korea creates an ominous music video, "The Bachelor" incites emotionally-charged staring, and John Sexton compares baseball and religion.

Junot Diaz

The Vatican welcomes Pope Francis, Roma Downey stars in "The Bible," Trevor Potter memorializes Ham Rove, and Junot Diaz shares the Freedom University project.

Eric Topol

Republicans contemplate a Celebrity Task Force, Senator Rob Portman flip-flops on gay marriage, and Eric Topol shares his book, "The Creative Destruction of Medicine.

Carl Edgar Blake II

Papa Bear reassess gay marriage, scientists study Facebook "Likes," Tennessee lawmakers mistrust a mop sink, and Carl Edgar Blake II shows off his pigs.

Robert Lustig

Same-sex marriage divides the Supreme Court, Emily Bazelon explains Proposition 8 and the Defense of Marriage Act, and Robert Lustig warns against sugar.

Sigourney Weaver

Google pays tribute to Cesar Chavez, Pope Francis breaks a New Testament tradition, Tennessee uses a health care lottery, and Sigourney Weaver talks theater.

Jim McGreevey

Sue Everhart warns of gay marriage fraud, Victor Cha dissects North Korea's bomb threats, Florida plans to outlaw bongs, and Jim McGreevey advocates in-prison rehab.

A.C. Grayling

Mark Sanford runs against Elizabeth Colbert Busch, Louie Gohmert compares gun control to bestiality, the GOP surveys young people, and A.C. Grayling talks God and reason.

Francis Collins

An Exxon pipeline bursts in Arkansas, Jeremy Irons compares gay marriage to incest, and NIH Director Francis Collins explains Obama's BRAIN Initiative.

Bill Clinton

At the Clinton Global Initiative University Meeting, President Bill Clinton discusses foreign aid, poverty, TED Talks, Twitter and the Colbert Galactic Initiative.

Charlie LeDuff

Stephen attends the Clinton Global Initiative University Exchange, Exxon sweeps oil into storm drains, and Charlie LeDuff shares his book, "Detroit: An American Autopsy.

Shane Smith

The Navy builds a laser missile, Senate Republicans give in to gun control, Anthony Weiner ponders the mayoral race, and VICE cofounder Shane Smith talks storytelling.

Cass Sunstein

NASA develops an asteroid lasso, Nick Gillespie talks about pot legalization, New York City targets filthy Times Square mascots, and Cass Sunstein slams the food pyramid.

Caroline Kennedy

Terrorists attack the Boston Marathon, Canada manufactures Sexcereal, the Rollie Eggmaster cooks up gelatinous egg rods, and Caroline Kennedy recites poetry with Stephen.

Alan Cumming

The media dreams up Boston bombing suspects, Adam Davidson explains Bitcoin, Brad Paisley makes a sucky song about racism, and Alan Cumming tackles an almost one-man play.

Richard Engel

The New York Post misidentifies Boston Marathon suspects, Stephen debuts the Bucket, the Senate opposes gun background checks, and Richard Engel describes Syrian militias.

Michael Pollan

The Boston manhunt ends, Canadian police expose an Al Qaeda plot, America's infrastructure earns a bad grade, and Michael Pollan describes the four ways of cooking.

Eric Schmidt

Chris Christie is full of Scooby-Doo-doo, Thomas Herndon takes down Reinhart and Rogoff, and Google's Eric Schmidt talks digital identities.

Danica Patrick

Twitter hackers trigger a market crash, Bill Clinton picks a dignified Twitter name, the Mars rover draws a penis in the sand, and NASCAR's Danica Patrick manages her rage.

Gene Robinson

Stephen starts an "O" Book Club, Matt Cartwright speaks Spanish, Fox & Friends gets the word out about a guy singing like a canary, and Gene Robinson advocates gay rights.

Iggy & the Stooges

Jason Collins comes out as gay, New Zealand sanctions same-sex marriage, conservatives get defensive, criminals turn to Yelp, and Iggy Pop performs shirtless.

Evan Spiegel & Bobby Murphy

Congress disregards the Army's wishes, Iowa cracks illegal immigration, Budweiser encourages Facebook friendships, and Evan Spiegel and Bobby Murphy make photos disappear.

Macklemore & Ryan Lewis

A Newtown victim's daughter confronts Senator Kelly Ayotte, pro-gun senators lose voters' support, and Macklemore and Ryan Lewis share their album, "The Heist.

Ben Kingsley

The Feds identify three accomplices in the Boston bombings, President Obama addresses the Gitmo hunger strike, and Sir Ben Kingsley chats about "Iron Man 3.

Robert Caro

Stephen plugs cOlbert's Book Club, conspiracy theorists explain the government's ammo purchases, dogs ride the Mary Jane train, and Robert Caro scares Republicans.

Douglas Rushkoff

Fox News prepares for the Benghazi whistleblowers, Rep. Donna Edwards deals with a senile senior, teens amp up their promposals, and Douglas Rushkoff pinpoints the present.

Richard Besser

Stephen's sister loses her run for Congress, Republicans spite Obama, parents forego diapers, and Richard Besser shares his book, "Tell Me the Truth, Doctor.

Baz Luhrmann

Carey Mulligan divulges a dark secret, Jennifer Egan discusses "The Great Gatsby"'s place in American letters, and Baz Luhrmann pays homage to F. Scott Fitzgerald.

Jessica Buchanan & Erik Landemalm

The Obama administration lies about Benghazi talking points, the IRS inspects Tea Party groups, and Jessica Buchanan and Erik Landemalm share their book, "Impossible Odds.

Dan Brown

The House tries to repeal Obamacare again, an immigration study slams Hispanics, Maxim honors Miley Cyrus, and Dan Brown takes inspiration from Dante.

Cyndi Lauper

The UN describes bugs as "mini-livestock," Congresswoman Gwen Moore rides shotgun, and Cyndi Lauper outlines her Broadway musical, "Kinky Boots.

Daniel Lieberman

Congress peppers and grills Eric Holder, China seeks peace in the Middle East, a nonprofit provides access to printable guns, and Daniel Lieberman endorses toe shoes.

David Sassoon

ABC's Jonathan Karl lies about the Benghazi scandal, Stephen applies for Tea Party tax exemption, and David Sassoon shares his e-book, "The Dilbit Disaster.

Noah Feldman

Scientists solve the Irish potato famine mystery, pot boosts metabolism, Rep. Jeff Duncan plans to ban the census, and Noah Feldman describes the Cool War with China.

The National

Lois Lerner won't spill the IRS scandal beans, Mitch McConnell endorses hemp, PBS appeases David Koch, and The National shares their album "Trouble Will Find Me.

Christopher Chivers

Barack Obama addresses his usage of drones, Andrew Bacevich thinks war is bad, Pope Francis embraces atheists, and C.J. Chivers reports on Syrian rebels.

John Dingell

Mark Pocan tempts Stephen with divorce, precision-guided guns promote skill-free killing, and John Dingell wants Congress to learn how to compromise.

Alex Gibney

The Report pays tribute to Michele Bachmann, NASA researches printable food, the IRS invests in line dancing, and Alex Gibney explores WikiLeaks.

Jonathan Alter

Superman gets a makeover, Laurie Garrett reviews Monsanto's wheat incident, the Chicago Sun-Times scraps photojournalism, and Jonathan Alter dissects the 2012 election.

Stephen King, John Mellencamp, & T Bone Burnett

The Obama administration snoops on Verizon customers, Stephen becomes a spy, and Stephen King writes a musical with John Mellencamp and T Bone Burnett.

Dan Savage

The NSA whistleblower explains himself, violent protests break out in Turkey, missile launch officers dislike their jobs, and Dan Savage criticizes DOMA.

Daniel Bergner

NSA Wiretapping Scandal, Jeffrey Rosen on the Fourth Amendment, TSA Detains Chewbacca, Daniel Bergner, "What Do Women Want?".

Paul McCartney

The NSA builds a data compound, Paul McCartney describes his music career with The Beatles and Wings, and Michael Bloomberg's bike share "begrimes" New York.

The Postal Service

Stephen honors his late mother, Cap'n Crunch lies about his rank, house flipping makes a comeback, and the Postal Service discusses their electronic music.

Joss Whedon

Iran replaces outgoing President Mahmoud Ahmadinejad, Rep. Steve King opposes chicken cage laws, Nestle markets to higher-income women, and Joss Whedon talks Shakespeare.

Andrew Solomon

NSA leaker Edward Snowden goes missing, Darrell Issa probes the IRS, news becomes truthinews, the KKK engineers a laser, and Andrew Solomon defines "exceptional" children.

Peniel Joseph

The Supreme Court guts part of the Voting Rights Act, Brazilians protest government spending, and Peniel Joseph criticizes the Supreme Court's decision.

Bill Moyers

Gay marriage gets a legal boost, Emily Bazelon analyzes the Supreme Court's decisions, and Bill Moyers chronicles the slow death of the American middle class.

Chuck Schumer

Mayor Michael Bloomberg declares war on the 4th of July, the Senate enacts immigration reform, and Senator Chuck Schumer talks tattoos and gang signs.

Jeremy Scahill

A Florida jury acquits George Zimmerman, Stephen inspects a SkyMiles scandal, Asiana Airlines sues KTVU over made-up pilot names, and Jeremy Scahill criticizes drone strikes.

David Karp

Britain prepares for the royal baby, George Zimmerman protestors sing instead of riot, NPR critiques multitaskers, and David Karp promises not to police Tumblr.

Jerry Seinfeld

Rolling Stone features the Boston bombing suspect, Congress removes food stamps from the farm bill, and Jerry Seinfeld shares his series, "Comedians in Cars Getting Coffee.

Jeff Bridges

Edward Snowden seeks asylum in Russia, San Diego's mayor faces sexual harassment charges, Eliot Spitzer runs for NYC comptroller, and Jeff Bridges shares his film, "R.I.P.D.

Kjerstin Gruys

Kate Middleton delivers her baby, Geraldo Rivera tweets a naked selfie, fast food workers protest the minimum wage, and Kjerstin Gruys examines body image issues.

Kenneth Goldsmith

The Prince of Wails is born, George Zimmerman helps a family in need, Barack Obama empathizes with black men, and poet Kenneth Goldsmith revisits seven U.S. tragedies.

Anant Agarwal

The royal couple name their baby George, Anthony Weiner apologizes for his latest sexts, Kanye West designs a blank t-shirt, and Anant Agarwal discusses his nonprofit, edX.

Olympia Snowe

An MC crashes the royal birth, Detroit files for bankruptcy, Steve King incites Jorge Ramos, and Olympia Snowe shares her book, "Fighting for Common Ground".

The Lumineers

FreedomWorks burns fake Obama insurance cards, North Carolina allows concealed weapons in bars, and the Lumineers share their self-titled debut album.

Atul Gawande

Surgeon and writer Atul Gawande discusses his New Yorker article "Slow Ideas."

Emily Matchar

Bradley Manning is found not guilty, Barack Obama and Hillary Clinton have lunch, Chris Christie and Rand Paul feud, and Emily Matchar shares the "new domesticity".

Bryan Cranston

Russia protects Edward Snowden, Mayor Bob Filner blames San Diego for his sexual misconduct, Gitmo prisoners read erotic romance, and Bryan Cranston talks meth and Malcolm.

Hugh Laurie

The U.S. government warns of a looming terror threat somewhere, Alex Rodriguez gets suspended for doping, and Hugh Laurie shares his blues album, "Didn't It Rain".

Robin Thicke

Daft Punk abandons StePhest Colbchella '013, Stephen angers his Hyundai sponsors, and "Blurred Lines" singer Robin Thicke saves Stephen's career.

Ashton Kutcher

Online critics bash StePhest Colbchella '013, union activist Mary Kay Henry supports fast-food strikers, the SEC comes down on a trader, and Ashton Kutcher talks "Jobs.

Colum McCann

CNN's doctor switches his position on pot, Matt Damon comes to Stephen's rescue, Darrell Issa wants ocean waters named after Reagan, and Colum McCann talks "TransAtlantic.

Sheldon Whitehouse

The Today Show features twerking, Senator Rush Holt champions public education, and Senator Sheldon Whitehouse chats about his book, "On Virtues.

John Lewis

Mayor Mike Bloomberg defends New York's stop-and-frisk, the TSA expands its duties, and Congressman John Lewis chats about his graphic novel, "March".

Kevin Spacey

Russia's anti-gay laws affect Olympic athletes, Obama hires psychologists to "nudge" public opinion, and Kevin Spacey talks "House of Cards".

Richard Brodhead

A rodeo clown wears an Obama mask, fracking companies put gag orders on families, Obama talks NSA transparency, and Professor Richard Brodhead promotes the humanities.

Timothy Cardinal Dolan

Syrian dictator Bashar al-Assad employs chemical weapons, The Daily Show gets Jon back, Rep. Dan Kildee promotes sugar beets, and Timothy Cardinal Dolan examines the papacy.

Gary England

Barack Obama endorses military action in Syria, The New Yorker's Steve Coll unpacks the president's decision, and meteorologist Gary England talks twisters.

John Prine

Ariel Castro commits suicide, kittens close down the NYC subway, Stephen assigns reading for cOlbert's Book Club, and John Prine shares his folk album, "The Missing Years.

Billie Jean King

Americans oppose military action in Syria, Fox News dreams up "Super Reagan," Iowa grants gun permits to blind people, and Billie Jean King recalls the "Battle of the Sexes.

Shane Salerno

Sheryl Crow

New York City holds the mayoral primary, Syria agrees to surrender its chemical weapons, Rand Paul flip-flops, and Sheryl Crow discusses her album, "Feels Like Home.

Philip Mudd

The New York Times prints Vladimir Putin's op-ed on Syria, Rep. Jim McDermott defends gay rights, and Philip Mudd shares his book, "Takedown: Inside the Hunt for Al Qaeda.

Andrew Bacevich

Stephen honors the Lehman Brothers, pundits criticize government "moochers," Miss America receives racist comments, and Andrew Bacevich shares his book, "Breach of Trust.

Arne Duncan

Billionaires get left behind, Kanye West performs for Kazakhstan's controversial leader, Cheerios cashes in on death, and Arne Duncan endorses early education.

Nicholson Baker

Andrew Sullivan supports U.N. intervention in Syria, conservatives attack gun violence in video games, and Nicholson Baker shares his book, "Traveling Sprinkler.

Jack Johnson

Michelle Obama promotes H2O, Republicans regulate Obamacare navigators, Jihawg Ammo makes bacon bullets, and Jack Johnson shares his album, "From Here to Now to You.

Metallica

Jon Stewart congratulates Stephen on his Emmys, Pope Francis speaks out on Catholic teachings, and Metallica presents its film, "Metallica: Through the Never.

Joseph Gordon-Levitt

Chris Fischer

Season finale.