Conan (11 p.m., TBS) - Actress Reese Witherspoon; Intergalactic Nemesis performs.
Late Show With David Letterman (11:35 p.m., CBS3) - Actress Viola Davis; the 2012 Sports Illustrated Swimsuit Edition cover model.
The Tonight Show With Jay Leno (11:35 p.m., NBC10) - Tyler Perry; Dorothy Custer; Cranberries perform.
Jimmy Kimmel Live (midnight, 6ABC) - Actor Kevin Nealon; Robin Thicke performs.