Talk Talk: Tom Cruise, James Lipton, Zappa Plays Zappa

Here's who's sitting down on the couch on the late night shows tonight.

• Charlie Rose: Valerie Plame Wilson and Mohamed Elbaradei
• The Daily Show: Valerie Plame Wilson
• The Colbert Report: Craig Venter
• The Late Show With David Letterman: Jennifer Connolly, Slash, and Nicole Atkins
• Jay Leno: Tom Cruise, Rep. Ron Paul, and The Sex Pistols
• Jimmy Kimmel Live: Rebecca Romijn and James Lipton
• Tavis Smiley: Paul Krugman and Serj Tankien
• Late Night With Conan O'Brien: Ethan Hawke, Susie Essman, and Zappa Plays Zappa
• The Late, Late Show With Craig Ferguson: Steve Carell and Good Charlotte
• Last Call With Carson Daly: Criss Angel