CONAN O'BRIEN: The B---- in Apartment 23's Krysten Ritter, Los Angeles Clipper Blake Griffin, musician Bob Mould
DAVID LETTERMAN: Flight's Denzel Washington, NCIS's Pauley Perrette, musician Paul Banks
JAY LENO: The X-Factor's Simon Cowell and Britney Spears, comedian Billy Gardell, music group Two Door Cinema Club
JIMMY KIMMEL: Madagascar 3: Europe's Most Wanted's Chris Rock, Live! with Kelly and Michael's Kelly Ripa, singer Alicia Keys
JIMMY FALLON: Argo's John Goodman, Top Chef's Padma Lakshmi, music group Imagine Dragons
CRAIG FERGUSON: Cloud Atlas' Tom Hanks, Phil Handley
Guest lineups are subject to change.
SOURCE: The Late Night TV Page