Who's On What Tonight? Your Guide to Late-Night TV (Thursday, Oct. 25, 2012)

CONAN O'BRIEN: The Mentalist's Simon Baker, It's Always Sunny in Philadelphia's Kaitlin Olson, comedian Reggie Watts
DAVID LETTERMAN: The Apprentice's Donald Trump, The Voice's Adam Levine, singer Carly Rae Jepsen
JAY LENO: Glee's Jane Lynch, Brand X's Russell Brand, singer Mika
JIMMY KIMMEL: First lady Michelle Obama, Cloud Atlas' Halle Berry, singer Ciara
JIMMY FALLON: The Good Wife's Julianna Margulies, Sports Illustrated's Dan Patrick, musician Gary Clark Jr.
CRAIG FERGUSON: Vegas' Michael Chiklis, Lost's Maggie Grace

Guest lineups are subject to change.

SOURCE: The Late Night TV Page