The media calls Barack Obama the "comeback kid," and Paul Giamatti says "rapscallion.

Republicans focus on 2010 issues, and Kirsten Gillibrand wants to reform the Senate filibuster rules.

John McCain gets cranky, and Jimmy Wales imagines Wikipedia's relevance in 500 years.

Facebook refuses to disclose its financial results, and Patton Oswalt uses a prisoner ghostwriter.

John Oliver reports on the Arizona shootings in his PJs, and Denis Leary discusses "Suck on This Year.

John Oliver celebrates Verizon's iPhone announcement, and Colin Firth talks about "The King's Speech.

Members of Congress introduce gun legislation, and Tim Pawlenty defends Republican rhetoric.

John Hodgman makes NASCAR more exciting, and Ron Howard shares his enthusiasm for show business.

Michael Steele steps down as RNC chairman, and Peter Bergen talks about progress in Afghanistan.

Jon promises Sarah Palin a classy conversation and reveals his love for Neil deGrasse Tyson.

Glenn Beck appears on the "Today" show, and Paul Clemens discusses blue-collar decline.

Steve Cohen compares Republicans to Nazis, and Kambiz Hosseini and Saman Arbabi call Jon a prophet.

Wyatt Cenac dons a parrot suit in Mississippi, and Anand Giridharadas tells Jon the truth.

A reporter searches for homeless talent, and Jon composes an ode to James Franco's Oscar nomination.

Michele Bachmann looks off camera, and Jonathan Alter examines Obama's plans for the future.

Bill O'Reilly defends his Nazi analogies, and T. Boone Pickens wants America on an energy plan.

Egyptian forces use American tear gas canisters, and Bill Gates works on curing polio.

Conservatives turn into political hypochondriacs, and Michael Steele must prove his identity.

Republicans close the rape loophole, and Matthew Perry talks about his happy friend.

Justin Bieber switches bodies with Jon, and Mike Mullen talks about the crisis in Egypt.

Anchor and Managing Editor, NBC Nightly News. The award-winning journalist and friend-of-the-show stops by.

CNN anchors take viewer requests, and Howard Stern hopes to talk to Charlie Sheen.

Prince Zeid Ra'ad Representative, The Hashemite Kingdom of Jordan The U.N. representative of Jordan discusses King Abdullah II's new book, "Our Last Best Chance.

Author Brian Christian ('The Most Human Human: What Talking with Computers Teaches Us About What It Means to Be Alive').

From 'Battle: Los Angeles,' actor Aaron Eckhart.

'South Park,' creators Trey Parker and Matt Stone.

Author, "Unfamiliar Fishes." The author discusses her new book about American colonization of Hawaii in the 1800s.

The author of "The Savage City" discusses his new book about murder and corruption in New York City during the 1960s and 70s.

Republicans want to lower the corporate tax rate, and Mansour O. El-Kikhia discusses Libya.

Joe Biden works the room at a war speech, and Miguel Nicolelis helps paralyzed people walk again.

Republicans appeal to their narrow base, and Jake Gyllenhaal considers marrying a stranger.

CIA operatives might arm Libyan rebels, and Norm Macdonald wants to blow up his stupid high school.

The comedian and actor discusses his role as a vampire in an upcoming Funny Or Die short.

The comedian discusses his one-man Broadway show and special on HBO.

The former governor of Arkansas discusses his views on government, families and his latest book.

The chef talks about healthy cooking habits and the upcoming season of his Emmy-winning series.

The rock band visits to perform a song from their latest album.

The governor of Massachusetts discusses his rise from poverty and what gives him hope for America's future.

The actor and comedian discusses his role in the upcoming animated film.

The comedian talks about his new HBO special with Jerry Seinfeld, Chris Rock and Louis C.K.

John Oliver highlights royal wedding coverage, and Gigi Ibrahim talks about the Egyptian uprising.

Olivia Munn looks into tiger mothering, and Elizabeth Warren wants to protect consumers.

Obama releases his long-form birth certificate, and Bernie Sanders fights for workers' rights.

John Oliver talks to British taxpayers about the wedding, and William Cohan discusses Goldman Sachs.

The U.S. kills Osama bin Laden, and Philip K. Howard explains why the government can't make choices.

A royal wedding simulation reveals the consummation, and Rachel Maddow discusses Bin Laden's death.

The White House hides the Bin Laden photo, and David Barton discusses religion in the Constitution.

Donald Trump steals the crazy oxygen from Sarah Palin, and Jon Meacham discusses the Civil War.

Jason Jones visits the gayest city in America, and Keira Knightley learns about the Santorum.

Republicans take credit for Bin Laden's death, and Will Ferrell simulates sex with a baseball bat.

Common causes controversy, and Albert Brooks talks about his Kate Middleton obsession.

Newt Gingrich announces his candidacy on Twitter, and Kristen Wiig talks about "Bridesmaids.

Osama bin Laden's porn stash is discovered, and Jon Ronson talks about psychopaths.

Al Madrigal weighs in on immigration reform, and Annie Jacobsen talks about Area 51.

Newt Gingrich outrages Republicans, and Richard Beeman discusses religion in government.

John Hodgman creates a Bin Laden conspiracy theory, and Lisa P. Jackson addresses EPA criticism.

Sarah Palin takes a bus tour with her family, and Jimmy Fallon reads a thank you note.

Donald Trump eats his pizza with a fork, and Bill Moyers discusses good journalism.

Eric Cantor wants to justify tornado relief, and Tim Tebow talks about his missionary parents.

Sarah Palin offers her version of Paul Revere, and Maziar Bahari recounts his Iranian imprisonment.

John Oliver promises to mock Anthony Weiner, and Fareed Zakaria discusses American labor.

Anthony Weiner apologizes to Bill Clinton, and Larry King prepares for his European stand-up tour.

Jon spins the penis wheel, and Howard Wasdin talks about SEAL Team Six.

Nancy Pelosi calls on Anthony Weiner to resign, and Alex Prud'homme discusses water pollution.

Republican hopefuls gather for their second debate, and J.J. Abrams talks about writing for TV.

Barack Obama visits Puerto Rico, and Trey Parker and Matt Stone become the Broadway establishment.

Sam Bee reports on the smoking ban in NYC parks, and Ray Nagin discusses Hurricane Katrina.

PolitiFact checks Fox News for false statements, and Cameron Diaz removes Jon's stitches.

Greece protests proposed austerity measures, and Mitchell Zuckoff recounts an unlikely WWII rescue.

John Hodgman battles hackers on their own turf, and Bruce Headlam discusses "Page One.

New York legalizes gay marriage, and Jennifer Aniston talks about her movie, "Horrible Bosses.

Rod Blagojevich has much to look forward to in prison, and Louis C.K. deconstructs fart jokes.

Democrats and Republicans can't agree on the debt ceiling, and Tom Hanks discusses his movie "Larry Crowne.

Mark Halperin calls Barack Obama a dick, and Bill Kristol discusses American war strategy in Afghanistan.

Aasif Mandvi finds out why America's birds are dying, and Denis Leary talks about potato Vodka.

China might repossess America if Republicans and Democrats don't come to an agreement over the debt crisis, and Kid Rock is a responsible parent with his own brand of beer.

Jerry Seinfeld helps Jon repress his urge to make gay jokes about Marcus Bachmann, and Matthew Richardson reveals his plan to solve America's mortgage crisis.

The ongoing debt ceiling negotiations get heated, and Leroy Petry demonstrates his robotic hand.

Barack Obama breaks out his I-mean-business podium and sets a deadline to solve the debt ceiling crisis, and Daniel Radcliffe talks about the last "Harry Potter" movie.

The Murdoch scandal turns ugly, and Pervez Musharraf enjoys a beverage and converses about Pakistan.

Rupert Murdoch throws his employees under the bus, his wife pummels a pie-wielding idiot, and Steve Carell loves his papa bear.

A battle for survival rages among GOP presidential candidates, Allen West doesn't hate women, and Scott Miller discusses William McKinley's ill-liked, anarchist assassin.

Wyatt Cenac proves his commitment to weather reporting, Samantha Bee and Jason Jones interview gay newlyweds, and Neil Patrick Harris talks Smurf sex and circus tricks.

Barack Obama urges Americans to call their members of Congress about the debt crisis, and Juan Williams discusses the assault on honest debate.

Conservatives in America live a lonely life of persecution, and Rachel Weisz discusses filming "The Whistleblower" in Romania.

Congressional Republicans try to rev support for John Boehner's debt ceiling plan with a clip from "The Town," and Peter Tomsen discusses the wars of Afghanistan.

Congress reaches a budget deal that Tea Partiers don't like, Jon salutes the troops he met in Afghanistan, and Freida Pinto talks apes.

Joe Biden charges his Secret Servicemen rent, Aasif Mandvi explores the effects of wind farming on Florida's ducks, and Jason Bateman talks R-rated body swaps.

A congressional super committee answers America's prayers, Wyatt Cenac interprets public sentiment, and Austan Goolsbee finds it hard to work in Washington.

Jon gives Barack Obama a birthday present, Jason Jones survives a vasectomy, and Senator Dick Durbin understands America's disappointment in Congress.

America's credit gets downgraded, John Oliver tells the single greatest story he's ever heard, and Mark Adams turns right at Machu Picchu.

Looters queue up in the U.K., Europe needs a war to cling to, and Jay Bahadur gets the pirates of Somalia talking.

Wisconsin's populist-off comes to a head, Larry Wilmore wants Barack Obama to go blacker, and John Coffee pins down credit rating agencies.

Michele Bachmann wins the Iowa straw poll, Rick Perry announces his presidential candidacy, and Ali Velshi knows how to speak money.

The media loves Michele Bachmann, Rick Perry hits on America, John Hodgman rethinks bookstores, and veteran firefighter Matt Long survived being crushed by a bus.

The media shifts its focus to Paul Ryan, John Oliver and Wyatt Cenac explore racial language in politics, and Michael Steele discusses the field of GOP candidates.

Warren Buffett enters the "class warfare" fray, Fitch downgrades New Jersey's credit rating, and Anne Hathaway talks Scrabble strategy.

The media scrutinizes Barack Obama's speech scheduling, James Hoffa Jr. upsets conservatives, and Buddy Roemer discusses his presidential candidacy.

Mitt Romney and Rick Perry battle it out, the U.S. Postal Service faces bankruptcy, and Dr. Sanjay Gupta explores the terrifying effects of the World Trade Center's dust.

GOP candidates square off at the presidential debate, Rick Perry rickrolls Mitt Romney, and Marion Cotillard discusses her fear of contagion.

Barack Obama hits congressional Republicans with his jobs speech, America should settle for a campaign-driven economy, and Admiral Mike Mullen discusses the troops.

CNN and the Tea Party team up, Rick Perry gets a beatdown, and Jim Lehrer discusses the tensions of presidential debates.

Dick Cheney's medical equipment humanizes him, the Democrats lose a congressional seat, and Common tries to make sense of it all in his memoir.

Congress investigates the Solyndra scandal, Kristen Schaal unveils her pro-vagina campaign products, and Caroline Kennedy commemorates her parents' legacy.

Jason Jones reports on the end of "don't ask, don't tell"; Wyatt Cenac examines America's loss of UFOs to China; and Ron Suskind evaluates Barack Obama's confidence.

Barack Obama presents his tax plan, the super rich risk extinction, and Mitch Daniels discusses the American economy.

John Oliver and Aasif Mandvi fight over sacred ground, Lewis Black evaluates the threats American kids face, and Jennifer Granholm discusses America's economic future.

Rick Santorum thinks sex is a non-issue, the GOP calls for Chris Christie to run for president, and Ron Paul delivers his political message.

Barack Obama gets heckled in Hollywood, Larry Wilmore discusses the black vote, and Seth Rogen explores the lighter side of cancer.

Pundits interpret Chris Christie's message, Sarah Palin weighs the presidential pros and cons, and Bill O'Reilly talks job creator taxes.

An NYPD officer pepper-sprays protestors, the NRA unveils a conspiracy theory, and Tony Bennett collaborates with young artists on "Duets II.