Conan

(11 P.M., TBS) - Paula Abdul; Simon Cowell; Joe Mande.

Late Show With David Letterman (11:35 p.m., CBS3) - Harry Connick Jr.; Scott Van Pelt; Mariachi El Bronx.

The Tonight Show With Jay Leno (11:35 p.m., NBC10) - Charles Barkley; Berenice Bejo; Amber Riley.

Jimmy Kimmel Live (midnight, 6ABC) - Simon Cowell, Paula Abdul, Nicole Scherzinger and L.A. Reid; Anna Faris; The Kooks.