Michael Pollan

George Lucas

Admn. Mike Mullen

Maggie Gyllenhaal

John Yoo

Paul Ingrassia

Ringo Starr & the Ben Harper Band

Thu, Jan 14, 2010

David M. Walker

Colin Firth

Wed, Jan 20, 2010

Julie Andrews

Bill Gates

Elizabeth Warren

Ethan Watters

Doris Kearns Goodwin

Austan Goolsbee

Brian Williams

Atul Gawande

Rep. Anthony Weiner

Jenny Sanford

Newt Gingrich

Willie Mays

Lee Daniels

Ricky Gervais

Jeff Garlin

Tracy Morgan

Rep. James Clyburn

Neil DeGrasse Tyson

Robert Pattinson

Lynne Olson

Scott Patterson

Harry Markopolos

Marc Thiessen

Jerry Seinfeld

Eamon Javers

Michael Lewis

Jude Law

Snoop Dogg

Gary Locke

Ben Stiller

Robin Williams

Roxana Saberi

Liz Claman

Reza Aslan

Capt. Richard Phillips

Steve Carell

David Remnick

Bryan Cranston

Rachel Maddow

Richard R. Burt

Tracy Morgan

Rep. John Dingell

John O'Hara

Fred Pearce

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, Bob Bradley

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 Gunn

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

Philip Dray

Naomi Watts

Johnny Knoxville

Rep. Eric Cantor

Condoleezza Rice

David Rakoff

Austan Goolsbee

Sen. Ted Kaufman

President Barack Obama

Zach Galifianakis

Michael Beschloss

Chris Wallace

David Sedaris

Gov. Rick Perry

Harrison Ford

Mick Foley

Rosario Dawson

Marion Jones

Bethany McLean

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