The Ellen DeGeneres Show

(3-4 p.m., NBC10) - Animal handler Jack Hanna; skateboarder Ryan Sheckler (

Life of Ryan

).

Oprah Winfrey

(4-5 p.m., 6ABC) - Actresses Jenny McCarthy and Holly Robinson Peete discuss their sons' autism.

Can't Buy Me Love

(8-10 p.m., FAM) - Patrick Dempsey (

Grey's Anatomy

) had one of his first star turns in this 1987 comedy, a hybrid of

Pretty Woman

and

The Nutty Professor

with teenagers. He plays a geeky high-schooler who offers his cheerleader crush (Amanda Peterson) $1,000 to be his girlfriend, conferring instant coolness upon him. Complications arise when she falls for him as his popularity starts going to his head.

The Mask

(9-10:45 p.m., TBS) - Adapted from a comic-book series, this Jim Carrey vehicle is the tale of a timid bank clerk who puts on a mysterious mask, does a few cyclone spins around his apartment, pops his eyeballs Looney Tunes-style and is transformed: a grinning goon with a guacamole face and a personality in hyperdrive. When Carrey is in his non-Mask mode, the film gets flabby, but when the star's face turns green and his limbs get limber, this cartoon-y creation becomes an amazing fusion of physical comedy and state-of-the-art gimmickry.

Late Show With David Letterman

(11:35 p.m.-12:35 a.m., CBS3) - Actress Jenna Fischer; sports announcer Jim Nantz; Gavin Rossdale performs.

The Tonight Show With Jay Leno

(11:35 p.m.-12:35 a.m., NBC10) - Actor Will Smith; tennis player Pete Sampras; Ed Harcourt performs.

Jimmy Kimmel Live

(12:05-1:05 a.m., 6ABC) - Actor Kevin Nealon; reality TV star DeAnna Pappas; the Ting Tings perform.

The Late Late Show With Craig Ferguson

(12:35-1:35 a.m., CBS3) - Actor Michael Clarke Duncan; comic Chelsea Handler.

Late Night With Conan O'Brien

(12:35-1:35 a.m., NBC10) - Lightspeed Champion performs.