Guests: Comedian Martin Short, talk show host Tavis Smiley, economist Stephen Moore, Sen. Barbara Boxer, sportscaster Bob Costas

Topics: Bush's new ads, Kerry, Haiti, steroid scandal in baseball, Super Size Me and fast food, Martha Stewart found guilty

Guests: Columnist Thomas Friedman, writer David Frum, singer Natalie Mames, Gen. Wesley Clark and Sen. Barbara Boxer.

Topics: Middle East, Darfur, gays in the military, guns, immigration

Guests: Gov. Jon Corzine (D-NJ), TV host Craig Ferguson, journalist Michel Martin, Matt Taibbi (election correspondent); via satellite, Gov. Tim Kaine (D-VA)

Topics: The 2008 election, 2008 Democratic National Convention, McCain's VP pick Sarah Palin

Bill's guests include "Art of Tough" author Senator Barbara Boxer (D-CA), musician Tom Morello, New York Times columnist Andrew Ross Sorkin, MTV news correspondent Ana Marie Cox, and GOP strategist Katie Packer.