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

• Charlie Rose: coverage of the NH Primary
• The Daily Show: David Frum
• The Colbert Report: Michael Pollan
• The Late Show with David Letterman: Lucy Liu, MGMT, and Bill Medley
• Jay Leno: TBA
• Jimmy Kimmel Live: TBA
• Tavis Smiley: Denzel Washington
• Late Night with Conan O'Brien: TBA
• The Late, Late Show with Craig Ferguson: Marion Cotillard, Rogue Wave, and Dr. Kevin
• Last Call with Carson Daly: Steve-O and Joshua Radin

• CSPAN and the news channels will have coverage of the NH Primary all night, and the other networks will cut in with results too.
• At 8, NBC has a new, two-hour Biggest Loser, then a new Law and Order: SVU.
• ABC has a new Just For Laughs at 8.
• The CW has two new episodes of One Tree Hill starting at 8.
• There's a new Nova on PBS at 8, followed by a new Frontline.
• At 9, CBS has The People's Choice Awards.
• ABC has a new According To Jim at 9, then new episodes of Carpoolers and Boston Legal.
• Discovery has a new Dirty Jobs at 9.
• At 10, Bravo has a new Real Housewives of Orange County.
• Sci-Fi has a new ECW at 10.

Check your local TV listings for more.