The Ellen DeGeneres Show

(3-4 p.m., NBC10) - Actor Shemar Moore (

Criminal Minds

); "Science Guy" Steve Spangler; Kristin Williams, owner of K. Morgan boutique, discusses falling through a fashion-show runway.

NCIS

(8-9 p.m., CBS3) - A Navy lieutenant who is putting a prototype "smart" vehicle through its paces is trapped inside, where she's killed by exhaust. Suspicion falls on a mechanic who was dating the victim.

Reaper

(9-10 p.m., CW57) - Sam wakes up one morning getting electric shocks from everything he touches. The devil (Ray Wise) explains this has to do with his latest assignment: an angry fugitive soul who feeds on power lines.

Without a Trace

(10-11 p.m., CBS3) - A man collapses after winning a chili-eating contest, then disappears. The team learns that although his doctor had warned him that competitive eating would kill him, the real cause of his collapse was poisoning.

Boston Legal

(10-11 p.m., 6ABC) - Denny, who's not so svelte himself, is firing an associate from the firm because she's too fat. That's a discrimination suit waiting to happen.

Late Show With David Letterman

(11:35 p.m.-12:35 a.m., CBS3) - Actress Julianne Moore; filmmaker Morgan Spurlock; a performance by the Broadway cast of

South Pacific

.

The Tonight Show With Jay Leno

(11:35 p.m.-12:35 a.m., NBC10) - Actress Liv Tyler; filmmaker Judd Apatow; Usher performs.

Jimmy Kimmel Live

(12:05-1:05 a.m., 6ABC) - Actor Dennis Hopper; comic Doug Benson.

The Late Late Show With Craig Ferguson

(12:35-1:35 a.m., CBS3) - Actress Kristin Davis; TV host Joel McHale; comic Drake Witham.