The Ellen DeGeneres Show
(3 p.m., NBC10) - At Universal Orlando Resort; Mario Lopez; Rascal Flatts perform; dance crew Saltare.
NCIS (8 p.m., CBS3) - Gibbs and his team find themselves literally in the dark as their investigation into a lieutenant's death is connected to a citywide blackout, forcing them to rely on old-fashioned methods that don't require power.
Glee (8:59 p.m., Fox29) - They came, they saw, they warbled, and now, as Fox's breakout hit musical dramedy wraps up its first season, Will and his glee club, New Directions, face off against their archrivals, Vocal Adrenaline, at what is sure to be a tense regional competition.
NCIS: Los Angeles (9 p.m., CBS3) - A crime scene poses a national security risk when Callen and the team discover the location was used to create a deadly toxin that is now missing.
Late Show With David Letterman (11:35 p.m., CBS3) - Kate Hudson; Dario Franchitti; Sarah McLachlan.
The Tonight Show With Jay Leno (11:35 p.m., NBC10) Chris Rock; Nicole "Snookie" Polizzi; Sting.
Jimmy Kimmel Live (12:36 a.m., 6ABC) - Bryan Cranston; Vanessa Minnillo; Iyaz performs.
The Late Late Show With Craig Ferguson (12:37 a.m., CBS3) - Filmmaker John Waters; Taraji P. Henson.
Late Night With Jimmy Fallon (12:37 a.m., NBC10) - Holly Hunter; Lee Dewyze; Circa Survive performs.