The Ellen DeGeneres Show

(3 p.m., NBC10) - Actress Anne Hathaway (

Bride Wars

).

I'm a Celebrity . . . Get Me Out of Here! (8 p.m., NBC10) - Ten "celebrities" use wiles to decide who will be king or queen of the jungle. Featuring Heidi Montag and Spencer Pratt (The Hills), supermodel Janice Dickinson, actor Stephen Baldwin and former American Idol contestant Sanjaya Malakar.

Greek (8 p.m., FAM) - Heartsick Casey throws herself into the social activities of her sisters and winds up meddling in brother Rusty's romance.

How I Met Your Mother (8:30 p.m., CBS3) - Ted's friends try to help him avoid someone from his past.

Two and a Half Men (9 p.m., CBS3) - Chelsea asks Charlie to spend the night at her place, away from his familiar "stuff."

Rules of Engagement (9:31 p.m., CBS3) - Audrey discovers Russell's secret shame - he's a Broadway musicals fan - and tries to cash in on it.

CSI: Miami (10 p.m., CBS3) - A brutal double murder is linked to the Russian mob.

Medium (10 p.m., NBC10) - Allison is worried sick after she has a nightmare about the massacre of her family.

Late Show With David Letterman (11:35 p.m., CBS3) - Bill Cosby; Melody Gardot performs.

Tonight Show With Conan O'Brien (11:35 p.m., NBC10) - Will Ferrell; Pearl Jam performs.

Jimmy Kimmel Live (12:06 a.m., 6ABC) - Ben Stiller; the winner of Dancing With the Stars; No Doubt performs.

Late Late Show With Craig Ferguson (12:37 a.m., CBS3) - Mary-Louise Parker; director Guillermo del Toro; Tori Amos performs.

Late Night With Jimmy Fallon (12:37 a.m., NBC10) - Anne Hathaway, Will Forte and Jon Favreau.