Who's On What Tonight? Your Guide to Late-Night TV (Monday, September 24, 2012)

CONAN O'BRIEN: 30 Rock's Elizabeth Banks, comedian Jordan Peele, music group Animal Collective
DAVID LETTERMAN: Actor and comedian Steve Martin, musician Gotye
JAY LENO: Rules of Engagement's David Spade, Revolution's Giancarlo Esposito, singer Rebecca Ferguson
JIMMY KIMMEL: The Good Wife's Julianna Margulies, Modern Family's Jesse Tyler Ferguson, music group The Killers
JIMMY FALLON: REPEAT
CRAIG FERGUSON: Vegas' Dennis Quaid, The Office's Ellie Kemper

Guest lineups are subject to change.

SOURCE: The Late Night TV Page