Guests: Sen. Russ Feingold (D-WI), commentator Fred Barnes, actor Eddie Griffin, reporter Helen Thomas, Iraq advisor Dan Senor

Guests: actor Danny Glover, fmr. Sen. Gary Hart, author Irshad Manji, Rep. Heather Wilson, and columnist Nicholas Kristof

Guests: Comedian D. L. Hughley, editor/journalist Graydon Carter, correspondent Dana Priest, fmr. Dir. of FEMA Michael Brown, fmr. CIA case officer/author Bob Baer, actor Harry Anderson

Guests: Feminist Gloria Steinem, actor Larry Miller, editor Ramesh Ponnuru, baseball's Pete Rose, reporter John Burns

Guests: R.E.M.'s Michael Stipe, actor/comedian Richard Belzer, Rep. Ileana Ros-Lehtinen (R-FL), writer Michele Mitchell, television anchor Lou Dobbs

Guests: Actor Jason Alexander, author/theologian Reza Aslan, Rep. Jack Kingston (R-GA), reporter Michael Ware, talk show host Tavis Smiley

Guests: Actor Robert Wuhl, actor Seth Green, author Erica Jong, Rep. Dana Rohrabacher, anchorman Jorge Ramos

Guests: Actor Ben Affleck, Sen. Joe Biden, correspondent Bill Sammon, author/former Republican strategist Kevin Phillips, Rep. Cynthia McKinney (D-GA)

Guests: Commentator Heather Higgins, Gen. Anthony Zinni, editor/publisher Mortimer Zuckerman, sports commentator Stephen A. Smith, Rep. Rahm Emanuel

Guests: Actor/director George Clooney, actor Ian McKellen, Rep. Barney Frank, correspondent Michel Martin, and historian Victor Davis Hanson

Guests: Actor Bradley Whitford, Fmr. PM of Canada Kim Campbell, fmr. Gov. Jim Gilmore, Gen. Wesley Clark, and Sen. Mel Martinez

Guests: Fmr. Sec. of State Madeleine Albright, singer/songwriter John Legend, national security expert Richard Clarke, academic Cornel West and Fox News show host John Gibson

Guests: Filmmaker Spike Lee, music legend Elvis Costello, blogger Markos Moulitsas, fmr. Sen. Max Cleland, author/scholar Vali Nasr, and columnist Christopher Hitchens

Guests: Magician Penn Jillette, Rep. Darrell Issa, scholar Mary Frances Berry; via satellite, intellectual Fouad Ajami and actor Harry Anderson

Guests: Author P. J. O'Rourke, Salon.com editor Joan Walsh, singer Rob Thomas; via satellite, former Israeli prime minister Benjamin Netanyahu and NBC News correspondent David Gregory

Guests: Feminist icon Gloria Steinem, homeland security expert Clark Ervin, actor Michael McKean; via satellite, Pat Buchanan and CNN reporter Christiane Amanpour

Guests: Actor Bradley Whitford, Fox News contributor Sandy Rios, author Reza Aslan; via satellite, New York Times columnist Frank Rich and filmmaker C.C. Goldwater

Guests: From Washington, D.C.: Sens. John Kerry and Lincoln Chafee; Rep. Ileana Ros-Lehtinen, counter-terrorism expert Richard Clarke, comedian/actor Robin Williams, journalist Chris Matthews

Guests: Journalist Lou Dobbs, Danielle Pletka of the American Enterprise Institute, actor Ben Affleck; via satellite, fmr. Sen. John Danforth and Richard Branson of Virgin Group

Guests: Gov. Bill Richardson, Rep. Barney Frank, actor Jason Alexander, Stephen Moore of The Wall Street Journal; via satellite, author David Kuo

Guests: Journalist Andrew Sullivan, politician Christine Todd Whitman, singer Harry Belafonte; via satellite, Rep. Harold Ford, Jr. and Arianna Huffington

Guests: Actor Alec Baldwin, Rep. Jack Kingston, The Hill associate editor A.B. Stoddard; via satellite, filmmaker Robert Greenwald and comedienne Roseanne Barr

Guests: CNN's Candy Crowley, actor Rainn Wilson, author Salman Rushdie; via satellite, Sen. Charles Schumer and Rep. Jeff Flake

Guests: Guitarist Tom Morello of Audioslave, journalist Dana Priest, actor Richard Dreyfuss; via satellite, journalist Dan Rather and television's Norman Lear