Fmr. White House Press Secretary Tony Snow, journalist and author Catherine Crier, entrepreneur Mark Cuban, writer Matt Taibbi, and journalist P.J. O'Rourke.
Comedian D.L. Hughley, author John Fund, singer Trace Adkins, columnist Dan Savage, and journalist Fareed Zakaria.
Guests: Actor/comedian Richard Belzer, musician Herbie Hancock, reporter Martha Raddatz, political strategist Amy Holmes (election correspondent), country singer Merle Haggard
Topics: Bill Clinton's role in campaign, Democratic campaign issues and oversight of Iraq War, Taliban's resurgence in Afghanistan, race and gender in the election, Rudy Giuliani's campaign strategy
Frank Lutz, Darrell Issa, Kim Gandy, Clarence Page, and Matt Taibbi.
Jonah Goldberg, Matthew Dowd, Bob Costas, Amy Holmes and P.J. O'Rourke.
Sen. Claire McCaskill, Paul Rieckhoff, Nina Hachigian, Frank Luntz, Amy Holmes and Andrew Sullivan.
Tom Brokaw, David Frum, Rep. Jack Kingston, Amy Walker, and Matt Taibbi.
Guests: Columnist Christopher Hitchens, author Shashi Tharoor, comedian Harry Shearer, author/sex columnist Dan Savage (election correspondent); via satellite, Gov Ed Rendell (PA)
Topics: Pennsylvania primary, Al-Qaeda in Iraq, appeal of Barack Obama, religion in politics
Adam Goldberg, Joe Scarborough, Farai Chideya, Terry McAuliffe, and Jeremy Scahill.
Melissa Harris-Lacewell, Joe Jon Hamm, Rep. Barney Frank (D-MA), P.J. O'Rourke, and Michael Ware.
John Cusack, Robin Wright, Tavis Smiley, Dan Savage, and Robert Klein.
Esai Morales, Robert Reich, Rep. Barbara Lee (D-CA), Amy Holmes, and Sen. Arlen Specter (R-PA).
Actor Jason Alexander, counter-terrorism expert Richard Clarke, journalist Dana Priest, biologist Richard Dawkins, and Rep. Joe Sestak (D-PA).
Scholar Cornel West, politician and writer Ayaan Hirsi Ali, blogger Markos Moulitsas, writer Jeremy Scahill and TV host Chris Matthews.
Blogger Arianna Huffington, comedian Garry Shandling, TV personality Phil Donahue, Real Time correspondent Matt Taibbi, and economist Jeffrey Sachs.
Gov. Jon Corzine (D-NJ), Gov. Tim Kaine (D-VA), TV host Craig Ferguson, journalist Michel Martin, Real Time Correspondent Matt Taibbi.
Actress Kerry Washington, fmr. Lt. Gov. Michael Steele (R-MD), Real Time correspondent Dan Savage, journalist Jeffrey Toobin, and fmr. White House Press Secretary Scott McClellan.
Actress Janeane Garofalo, author Salman Rushdie, journalist John Fund, comedian Roseanne Barr, and political consultant Paul Begala.
Musician and Black Eyed Peas frontman will.i.am., journalist Naomi Klein, political blogger Andrew Sullivan, and economist Paul Krugman.
Actor Tim Daly, independent candidate for president Ralph Nader, commentator Lisa Schiffren. Plus via satellite, comedy superstar Chris Rock and reporter Ron Suskind.
Actor Alec Baldwin, reporter Christiane Amanpour, comedian Garry Shandling, and journalist Bob Woodward.
Director Oliver Stone, Rep. Maxine Waters (D-CA), comedian Dana Gould, fmr. Comptroller General David Walker, and economist Steve Moore.
Actor Martin Short, actor Ben Affleck, and Sen. Bernie Sanders (I-VT). Plus via satellite, journalist Tom Friedman and pollster Frank Luntz.
Actor Tim Robbins, comedian Carol Leifer, political consultant Matt Dowd, economist Arthur Laffer, and ex-GOP operative Allen Raymond.
Singer John Legend, columnist Connie Schultz and independent conservative Amy Holmes. Plus via satellite, scholar Cornel West and filmmaker Michael Moore.
Mayor Cory Booker (D) Newark, NJ; Joe Queenan, Farai Chideya, Howie Mandel and Paul Begala.
Actor Ashton Kutcher, journalist Jon Meacham, Rep. Ileana Ros-Lehtinen (R-FL), Sean "Diddy" Combs and columnist Dan Savage.