Here's who's on the late night shows tonight.

• Charlie Rose: Bill Gates and Michael Bloomberg; a discussion of the iPhone (must have been postponed the other night); and author Ken Pollack
• The Daily Show: T.J. English
• The Colbert Report: Nas
• The Late Show with David Letterman: John C. Reilly, Jane Mayer, and Grizzly Bear
• Jay Leno: Kevin Costner, D.L. Hughley, and The Time
• Jimmy Kimmel Live: Paul Giamatti, Mitch Rouse, and Los Lonely Boys
• Tavis Smiley: Henry Winkler and Henry Zoglin (repeat)
• Late Night with Conan O'Brien: Liam Neeson, BJ Novak, and The Duke Spirit (repeat)
• The Late, Late Show with Craig Ferguson: Val Kilmer
• Last Call with Carson Daly: Eddie Izzard and Rick Ross (repeat)

• At 8, CBS has a new Big Brother.
• FOX has a new, two hour So You Think You Can Dance at 8.
• PBS has a new Click & Clack's As The Wrench Turns at 8, then a new Nova scienceNOW.
• Versus has more coverage of the Tour de France at 8.
• At 9, NBC has a new Baby Borrowers.
• Sci-Fi has a new Ghost Hunters International at 9, followed by two new episodes of Scare Tactics.
• A&E has a new Dog The Bounty Hunter at 9, then a new Criss Angel Mindfreak.
• History Channel has a new MonsterQuest at 9.
• Also at 9: Bravo has a new Project Runway, followed by a new Shear Genius.
• At 9:30, HGTV has a new Design on a Dime.
• At 10, ABC has a new Primetime: Crime.
• TruTV has a new Black Gold at 10.
• TBS has two new episodes of Tyler Perry's House of Payne at 10.
• At 10:30, Comedy Central has a new Mind of Mencia.

Check your local TV listings for more.