Guests: Actor George Clooney, film director Rob Reiner, journalist Jake Tapper, political commentator Nicolle Wallace, Levi Johnston

Topics: Crisis in Sudan, Clarence Thomas/Anita Hill, Campaign financing, 1st Amendment/ O'Donnell, Tea Party, 2010 elections, Sarah Palin, 'Don't ask, don't tell'

Guests: Filmmaker Rob Reiner, DNC Chair Debbie Wasserman Schultz, Ex GOP Presidential Candidate Herman Cain, Daily Beast Blogger David Frum, Documentarian Alexandra Pelosi.

Topics: Herman Cain's presidential campaign, attacks on Mitt Romney's 'vulture capitalism', US marines urinating on dead Taliban fighters, assassination of Iranian scientists, Romney's electability and the Republican primaries, Super PACs and campaign finance, holiday recap.

Political commentator Margaret Hoover, former Congressman Rick Lazio (R-NY), actor/director Rob Reiner, co-founder and president of Our Time, Matthew Segal, photographer James Balog

Interviewee: Ann Coulter (author)

Panelists: Debbie Wasserman Schultz (Rep. D-FL), Neil deGrasse Tyson (scientist), Rob Reiner (filmmaker)

Panel Guest: Rob Lowe (actor, "Killing Kennedy")

Topics: Obama's lie about current health care plans, Ted Cruz, Sr., women in politics, Rob Lowe as JFK, US embargo against Cuba, Kessler Syndrome, NSA spying, Republicans should appeal to stoners.

Director Rob Reiner, singer/songwriter Aloe Blacc, Bill Nye "The Science Guy", writer Fran Lebowitz and Washington Post's Elahe Izadi.

Bill's guests tonight include director Rob Reiner, New York Times national correspondent Mark Leibovich, The Polling Company president/CEO Kellyanne Conway, "Listen, Liberal" author Thomas Frank, and Humane Society president/CEO Wayne Pacelle.

Bill's guests include Julian Assange, Rob Reiner, Angela Rye, Rick Santorum, and Jeff Ross.

Bill's interview guest is Democratic Senator from Massachusetts, Elizabeth Warren, author of the book, "This Is Our Fight: The Battle to Save America's Middle Class." Bill's roundtable guests are: venture capitalist Nick Hanauer, film director Rob Reiner, CNN political commentator and editor of "Voices", Tara Setmayer and former Secretary of Energy, Ernest Moniz.

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Opening the show this week, Bill interviews astrophysicist Neil deGrasse Tyson. On the panel, he is joined by filmmaker Rob Reiner and political scientist Rachel Bitecofer.

This week, Bill interviews filmmaker John Waters and is joined on the panel by senior Democratic Senator Amy Klobuchar and filmmaker Rob Reiner.

Guests: An interview with Rob Reiner, director of the HBO Original documentary "Albert Brooks: Defending My Life," and Albert Brooks, Oscar(R)-nominated actor, comedian, director, and screenwriter; Donna Brazile - Georgetown University professor and contributor to ABC News, USA Today, and The Hill; Adam Kinzinger - former Republican Congressman from Illinois and author.