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

• Charlie Rose: Will Ferrell, John C. Reilly, and Adam McKay discuss Step Brothers. Also: Lewis Black
• The Late Show with David Letterman: Nathan Lane, Larry Brown, and Randy Bachman
• Jay Leno: Kevin Spacey, Triumph the Insult Comic Dog, and Jesse McCartney
• Jimmy Kimmel Live: Seth Green, Jesse Ventura, and Jamie Lidell
• Tavis Smiley: Sidney Poitier (Part 2 - repeat)
• Late Night with Conan O'Brien: Seth Meyers, Becki Newton, Tokio Hotel (repeat)
• The Late, Late Show with Craig Ferugson: Xzibit and Griffin House
• Last Call with Carson Daly: Kaley Cuoco and Gavin DeGraw (repeat)

• At 8, PBS has a new Washington Week, then new episodes of NOW and Bill Moyers Journal.
• The CW has a new Smackdown! at 8.
• At 9, ABC has a new Duel, followed by a new 20/20.
• NBC has a new Dateline at 9.
• There's a new Monk on USA at 9, then a new Psych.
• TLC has a new What Not To Wear at 9, followed by two new episodes of something called Ashley Paige: Bikini or Bust.
• VH-1 has a new Best Week Ever at 9.
• Sci-Fi has a new Doctor Who at 9, then a new Stargate Atlantis.
• Also at 9: HGTV has a special Design on a Dime: 35 Top Secrets, sort of a greatest hits of tips from the show.
• At 9:30, Toon Disney has a new Digimon.
• At 10, CBS has a new Swingtown (new night).
• History Channel has a new Shockwave at 10.
• Comedy Central has a new Live at Gotham at 10.
• E! has a new episode of The Soup at 10.

Check your local TV listings for more.