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