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

• Charlie Rose: Sean Penn
• The Late Show With David Letterman: Richard Gere, Tom Dreesen, and Velvet Revolver (repeat)
• Jay Leno: Hugh Laurie, Sherri Shepherd, and The Editors
• Jimmy Kimmel Live: Barry Manilow and Ty Pennington
• Tavis Smiley: Alan Alda
• Late Night With Conan O'Brien: Meredith Vieira, Steven Wright, and Ben Harper
• The Late, Late Show With Craig Ferguson: Terrence Howard, Jennifer Westfeldt, and Zap Mama
• Last Call With Carson Daly: Jon Hamm and Ingrid Michaelson

• At 8, FOX has a new Are You Smarter Than A Fifth Grader, then a new Nashville.
• The CW has a new Smackdown! at 8.
• PBS has a new NOW at 8, followed by new episodes of Washington Week, Bill Moyers Journal, and Expose.
• There's a new Cory in the House on Disney at 8, then a new Hannah Montana.
• The N has a new South of Nowhere at 8.
• Also at 8: Sci-Fi has a new Doctor Who, then a new Flash Gordon and the series finale of Painkiller Jane.
• At 8:30, Nickelodeon has a new Avatar: The Last Airbender.
• Animal Planet has a new Meerkat Manor at 8:30, followed by a new It's Me Or The Dog.
• At 9, Discovery has a new Survivorman.
• VH-1 has a new Best Week Ever at 9.
• At 10, E! has a new episode of The Soup.
• At 11, HBO has a new Real Time with Bill Maher.

Check your local TV listings for more.