Live With Regis and Kelly (9-10 a.m., 6ABC) - Actress Julianne Moore (Broadway's The Vertical Hour); actress Mandy Moore (Because I Said So); girlfriend getaways.
Rachael Ray (10-11 a.m., 6ABC) - Coed sleepovers; carpenter Eric Stromer (Clean Sweep) helps parents whose children climb into bed with them at night.
Martha (11 a.m.-noon, NBC10) - Diana Ross makes valentine cards and performs; a simple supper of pork chops with hush puppies.
The Ellen DeGeneres Show (3-4 p.m., NBC10) - Ellen's birthday; comic Wanda Sykes; band Keane performs; 8-year-old musical prodigy Marc Yu.
Monk (9-10 p.m., USA) - You rang? Adrian Monk's (Tony Shalhoub) uptight nature makes his latest undercover gig a perfect fit. He's posing as a butler in an effort to learn the truth about a possible murder. The victims are the wealthy neighbors of Natalie's (Traylor Howard) parents, and she has a feeling that someone did them in. Holland Taylor (Two and a Half Men) and Sean Astin guest star in the new episode Mr. Monk Is at Your Service.
NUMB3RS (10-11 p.m., CBS3) - With a name like Hoyle, you think she'd play by the rules. In the conclusion of the two-part story that opened the season, teacher Crystal Hoyle (Kim Dickens) is still on the loose. The FBI has caught her young student boyfriend (David Gallagher), but now she's got Megan (Diane Farr), whose efforts to get Crystal to open up put her life in even more danger. Rob Morrow also stars in "Two Daughters."
Late Show With David Letterman (11:35 p.m.-12:35 a.m., CBS3) - Actor Clint Eastwood; actor Matthew Fox.
The Tonight Show With Jay Leno (11:35 p.m.-12:35 a.m., NBC10) - Actress Rebecca Romijn; TV personality Bob Saget; Rodrigo y Gabriela perform.
Jimmy Kimmel Live (12:05-1:05 a.m., 6ABC) - Actress Vanessa Williams; actor Ryan Reynolds; comic Robert Kelly.
The Late Late Show With Craig Ferguson (12:35-1:35 a.m., CBS3) - Rapper LL Cool J; actor Masi Oka; Chris Daughtry performs.
Late Night With Conan O'Brien (12:35-1:35 a.m., NBC10) - Actor Will Ferrell; actor Christopher Meloni; Landon Pigg performs.
Last Call With Carson Daly (1:35-2:05 a.m., NBC10) - Actor Freddy Rodriguez; Young Jeezy performs.