Conan (11 p.m., TBS) - Actress Olivia Munn; actress Flo Rida; actor Ben Stiller.
Late Show With David Letterman (11:35 p.m., CBS3) - Amy Poehler; Josh Hutcherson; Tegan and Sara perform.
The Tonight Show With Jay Leno (11:35 p.m., NBC10) - Lindsay Lohan; David Gregory; Wanda Jackson performs.
Jimmy Kimmel Live (midnight, 6ABC) - Simon Cowell and Demi Lovato; Dancing With the Stars castoff.
The Late Late Show With Craig Ferguson (12:35 pa.m., CBS3) - Actress Marion Cotillard; comic Kevin Pollack.