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

• Charlie Rose: a discussion of Nelson Mandela's 90th birthday
• The Late Show with David Letterman: Rosie Perez and David Sedaris
• Jay Leno: Tim Allen, Demi Lovato, and OneRepublic
• Jimmy Kimmel Live: Maggie Gyllenhaal, Ant and Dec, and Minus the Bear
• Tavis Smiley: Famke Janssen, John Dean, and Barry Goldwater, Jr. (repeat)
• Late Night with Conan O'Brien: Senator John McCain and The Steeldrivers
• The Late, Late Show with Craig Ferguson: Mary Steenburgen and Criss Angel
• Last Call with Carson Daly: Daryl Hannah and Josh Kelley (repeat)

• At 8, The CW has a new Smackdown!
• PBS has a new Washington Week at 8, then new episodes of NOW and Bill Moyers Journal.
• Versus has more coverage of The Tour de France at 8.
• At 9, ABC has a new Duel, followed by a new 20/20.
• USA has the season premiere of Monk at 9, then the season premiere of Psych.
• Sci-Fi has a new Doctor Who at 9, followed by a new Stargate Atlantis.
• At 10, CBS has a new Flashpoint.
• History Channel has a new Shockwave at 10.
• Comedy Central has a new Live at Gotham at 10.
• There's a new episode of The Soup at 10.

Check your local TV listings for more.