TONIGHT: Robert Reich discusses his book, "Reason: Why Liberals Will Win the Battle for America." Plus, Stephen Colbert in "This Week in God".

TONIGHT: Author of "Assassination Vacation," Sarah Vowell!

TONIGHT: Host of CNBC's "Dennis Miller," Dennis Miller! Plus, Rob Corddry reports on "Dormaid."

TONIGHT: Author of "Speaking Freely", Floyd Abrams! Plus, Ed Helms reports on "Tax Shelter."

TONIGHT: Star of "XXX: State of the Union," Ice Cube! Plus, Samantha Bee reports on "Weyco, Inc."

TONIGHT: Author of "One Nation Under Therapy," Christina Hoff Somers! Plus, "International Pamphlet."

TONIGHT: Author of "Freakonomics," Steve Levitt!

TONIGHT: Author of "A Deficit Of Decency," and US Senator from Georgia, Zell Miller.

TONIGHT: Star of "Jiminy Glick in Lalawood," Martin Short! Plus, Jon investigates the use of web logs on television in "Blogisphere."

TONIGHT: Former Secretary of Homeland Security, Tom Ridge! Plus, Bob Wiltfong reports on "Sexy Cheerleading Band."

TONIGHT: Star of "Who's Afraid of Virginia Woolf?," Kathleen Turner!

TONIGHT: Star of "Monster-in-Law," Wanda Sykes! Samantha Bee reports on "Heavy Betting." Plus, Jon investigates the use of web logs on television in "Blogisphere."

TONIGHT: Star of "The Today Show", Al Roker. Plus, Lewis Black drops by with another segment of "Back In Black."

TONIGHT: Comedian and actress Tracey Ullman.

TONIGHT: Runner-up of "American Idol," Bo Bice! Plus, the latest headlines!

TONIGHT: Star of "Cinderella Man," Russell Crowe! Plus, Ed Helms reports on the "Man Saves Chicken Tale of Survival."

TONIGHT: Author of "Never Call Retreat," Newt Gingrich! Plus, Stephen Colbert with "This Week in God".

TONIGHT: Author of "Everything Bad Is Good for You," Steven Johnson! Plus, Ed Helms reports on the "Guns for Tots Revisited."

TONIGHT: Former Secretary of State, Colin Powell! Plus, the latest headlines!

TONIGHT: Co-Anchor of "The Today Show," Matt Lauer! Plus, Samantha Bee reports on "Wal-Mart Union."

TONIGHT: Author of "Squandered Victory : The American Occupation and the Bungled Effort to Bring Democracy to Iraq", Larry Diamond! Plus the latest headlines!

TONIGHT: Star of "Bewitched," Will Ferrell!

TONIGHT: Author of "Inheriting Syria," Flynt Leverett! Plus, Ed Helms reports on the "Speedo Ban."

TONIGHT: Author of "Countdown to Crisis," Kenneth Timmerman!

TONIGHT: Musician, Ringo Starr! Plus, Rob Corddry reports on "Visiting America."