Guests: Actor Richard Belzer, novelist Farai Chideya, senator John Edwards, David Frum, Ralph Nader

Topics: Iowa caucus, The Apprentice, Olivia Goldsmith, sexuality in islamic countries

Guests: Actor Ian McKellen, politician Christine Todd Whitman, Sandy Rios, Kwame Kilpatrick, Ralph Nader

Topics: The Passion of the Christ, gay marriage, environment

Guests: Rep. David Dreier, former Canadian Prime Minister Kim Campbell, filmmaker Michael Moore, musician Andre 3000, Gov. Bill Owens, Ralph Nader

Topics: Iraq, 7 minutes of silence, Nader's candidacy

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

Topics: Mark Foley scandal, 2004 and 2006 elections, Iraq War, international relations

Guests: Prof Cornel West, rapper/actor Mos Def; via satellite, Army Col Larry Wilkerson (ret.) and consumer advocate Ralph Nader

Topics: Iraq troop surge and upcoming Petraeus report, defining terrorism, roots of Islamic fundamentalism, black vote and political involvement, Jena Six

Guests: Politician Ralph Nader, actor Tim Daly, National Review Online contributor Lisa Schiffren; via satellite, journalist Ron Suskind, comedian Chris Rock

Topics: The first presidential debate, subprime mortgage crisis, economic stimulus package, Sarah Palin

Political activist Ralph Nader; author Douglas Brinkley; deputy chief of staff to the House Majority Leader, Doug Heye; Rep. Barbara Lee (D-Calif.).