Who's On What Tonight? Your Guide to Late-Night TV (Wednesday, Dec. 12, 2012)

CONAN O'BRIEN: Dexter's Michael C. Hall, This Is 40's Charlyne Yi, comedian Tommy Johnagin
DAVID LETTERMAN: Parental Guidance's Billy Crystal, James Balong, music group Grizzly Bear
JAY LENO: This Is 40's Albert Brooks, Scandal's Kerry Washington, singer Willy Moon
JIMMY KIMMEL: The Office's John Krasinski, Sleepwalk With Me's Mike Birbiglia, music group Atlas Genius
JIMMY FALLON: The Impossible's Naomi Watts, actor Hugh Bonneville, music group Florida George Line
CRAIG FERGUSON: This Is 40's Chris O'Dowd, 2 Broke Girls' Beth Behrs

Guest lineups are subject to change.

SOURCE: The Late Night TV Page