Guest: Journalist and author Michael Pollan talks about his new book Food Rules: An Eater's Manual.

Guest: Director George Lucas talks about the new book George Lucas's Blockbusting: A Decade-by-Decade Survey of Timeless Movies Including Untold Secrets of Their Financial and Cultural Success.

Guest: Jack Schaffer

Guest: Actress Maggie Gyllenhaal talks about her new movie "Crazy Heart".

Guest: Author John Yoo talks about his new book Crisis and Command: A History of Executive Power from George Washington to George W. Bush.

Guest: Author Paul Ingrassia talks about his new book Crash Course: The American Automobile Industry's Road from Glory to Disaster.

Guest: Ringo Starr & the Ben Harper Band drop by to talk about and sing a song from their new album "Y Not".

Guest: NBC News correspondent Tom Brokaw

David M. Walker

Colin Firth

Jim Wallis

Julie Andrews

The co-founder of The Bill & Melinda Gates Foundation, Bill Gates.

Chair of the Congressional Oversight Panel on TARP, Elizabeth Warren.

Author Ethan Watters talks about his new book Crazy Like Us: The Globalization of the American Psyche.

Presidential historian and author Doris Kearns Goodwin.

Austan Goolsbee

Brian Williams

Atul Gawande

Rep. Anthony Weiner

Jenny Sanford

Newt Gingrich

Willie Mays

Lee Daniels

- CPAC: the conservatives Woodstock
- Glenn Beck's rant on the disease of progressivism

Guest:
Ricky Gervais

- New credit card legislation takes effect along with new credit card company methods and fees to make money
- Toyota's acceleration problems

Guest:
Comedian Jeff Garlin talks about his new book My Footprint: Carrying the Weight of the World.

- Health care summit's eve and Republican gripes
- The problem with the Winter Olympics

Guest:
Actor and comedian Tracy Morgan talks about his new movie "Cop Out".

- Health care summit or political theater?

Guest:
House Majority Whip James Clyburn talks about his experience at the health care summit

Guest: Astrophysicist Neil DeGrasse Tyson talks about his new book The Pluto Files: The Rise and Fall of America's Favorite Planet.

Guest: Actor Robert Pattinson, star of "Twilight".

Guest: Scott Patterson is a staff reporter at The Wall Street Journal and talks about his new book The Quants: How a New Breed of Math Whizzes Conquered Wall Street and Nearly Destroyed It .

Guest: Author talks about his new book The Unforgiving Minute: A Soldier's Education.

Guest: Harry Markopolos is a financial investigator who first discovered Bernie Madoff's crimes in 1999 and talks about his new book No One Would Listen: A True Financial Thriller.

Guest: Marc Thiessen is former White House speech writer for President Bush and talks about his new book Courting Disaster: How the CIA Kept America Safe and How Barack Obama Is Inviting the Next Attack.

Guest: Comedian Jerry Seinfeld talks about his new show "The Marriage Ref".

Guest: Journalist Eamon Javers talks about his new book Broker, Trader, Lawyer, Spy: The Secret World of Corporate Espionage.

Guest: Author Michael Lewis talks about his new book The Big Short: Inside the Doomsday Machine.

Guest: Actor Jude Law talks about his new film "Repo Men".

Guest: Rapper Snoop Dogg promotes his new album "Malice N Wonderland".

Guest: Secretary of Commerce under President Obama, Gary Locke.

Ben Stiller

Robin Williams

Roxana Saberi

Edward Norton

Guest: Author Reza Aslan talks about his new book Beyond Fundamentalism: Confronting Religious Extremism in the Age of Globalization.

Guest: Captain Richard Phillips talks about his experience being hijacked by Somali pirates in his new book A Captain's Duty: Somali Pirates, Navy SEALS, and Dangerous Days at Sea.

Guest: Comedian Steve Carell talks about his new film "Date Night".

Guest: Author David Remnick talks about his new book The Unforgiving Minute: A Soldier's Education.

Guest: Star of "Breaking Bad" on AMC, Bryan Cranston.

Guest: Host of MSNBC's "The Rachel Maddow Show", Rachel Maddow.

Richard Burt

Guest: Comedian Tracy Morgan talks about his new movie "Death at a Funeral".

Rep. John Dingell

John O'Hara

Amanda Peet

Zoe Saldana

Lisa P. Jackson

Richard Whittle

Ken Blackwell

Michael Caine

Jonathan Eig

Rosalynn Carter

Jon Meacham

Mario Batali

Jack Rakove

Sebastian Junger

Michael Patrick King

Ian Bremmer

Arthur Brooks

Morgan Freeman

Jonah Hill

John C. Reilly

Christopher Hitchens

Spencer Wells

Gov. Tim Pawlenty

Betty White

James Tabor

Louis C.K.

Fred Thompson

Josh Fox

Cameron Diaz

Dr. Connie Mariano

Adam Sandler, Chris Rock

David Axelrod

Helen Mirren

Landon Donovan

Jere Van Dyk

Denis Leary

Julianne Moore

Daniel Okrent

Marilynne Robinson

William Rosen

Fareed Zakaria

Robert O'Connell

Liev Schreiber

Mary Roach

Will Ferrell

Bruce Henderson

Akbar Ahmed

Jason Bateman

Laura Linney

Arcade Fire

Emma Thompson

Dick Armey

Edward Kohn

Jennifer Aniston

Rod Blagojevich

Brian Williams

Drew Barrymore

Mayor Michael Bloomberg

Tim balloonn

Gov. Tim Kaine

Meghan McCain

Ben Affleck

Tony Blair

Jon Hamm

Bill Clinton

Jimmy Carter

Sigourney Weaver

Edward Norton

His Majesty King Abdullah II

Bill O'Reilly

Arianna Huffington

Linda Polman

Justin Timberlake

Sam Harris

Bruce Willis

TBA

Naomi Watts

Johnny Knoxville

Rep. Eric Cantor

Condoleezza Rice

David Rakoff

Austan Goolsbee

Sen. Ted Kaufman

President Barack Obama

Last day in Washington

Zach Galifianakis

Michael Beschloss

Chris Wallace

David Sedaris

Gov. Rick Perry

Harrison Ford

Mick Foley

Rosario Dawson

Marion Jones

Bethany McLean & Joe Nocera

Jay-Z

Philip K. Howard

Judah Friedlander

Susan Casey

Sting

Stacey Schiff

Gen. Hugh Shelton

Seth Green

Michelle Williams

Edmund Morris

Gordon Brown

Ricky Gervais

Paul Rudd

Mike Huckabee