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

• Charlie Rose: James Lipton and David Frost
• The Daily Show: Gov. Bill Richardson (repeat)
• The Colbert Report: Charlie LeDuff (repeat)
• The Late Show with David Letterman: Cher and Jerry Springer (repeat)
• Jay Leno: Leonardo DiCaprio, Naomi Watts, and The Goo Goo Dolls (repeat)
• Jimmy Kimmel Live: Jamie Foxx, Chyler Leigh, and Soulja Boy (repeat)
• Tavis Smiley: Rob Reiner
• Late Night with Conan O'Brien: Bob Saget, Maggie Q, and Shane Mauss (repeat)
• The Late, Late Show with Craig Ferguson: Regis Philbin, Katey Segal, and Colin Hanks (repeat)
• Last Call with Carson Daly: Ali Landry and Gym Class Heroes

• At 8, ABC has a new Duel.
• NBC has a new Clash of the Choirs and a new Biggest Loser.
• PBS has a new Nova at 8, then a new Independent Lens.
• AMC has the 1984 version of A Christmas Carol at 8.
• Also at 8: Food Network has Al Roker's Christmas in New York.
• At 9, CBS has a new episode of The Unit, then a new Cane.
• Lifetime has the movie On the 2nd Day of Christmas.
• At 10, TNT has a new Saving Grace.
• FX has a new Nip/Tuck at 10.
• Bravo has a new The Real Housewives of Orange County.
• There's a new ECW on Sci-Fi at 10.
• The Travel Channel has Christmas to the Extreme at 10.

Check your local TV listings for more.