Oprah Winfrey (4 p.m., 6ABC) - Sarah Palin talks about her new book.

House (8 p.m., Fox 29) - House reclaims his role as head of diagnostics in time to treat an adult film star.

Two and a Half Men (9 p.m., CBS3) - Chelsea invites her hot college roommate to stay at the house while recovering from a bad breakup.

Trauma (9 p.m., NBC10) - A high-speed boat collision interrupts a wedding celebration at sea.

Gossip Girl (9 p.m., CW57) - Blair tries to impress the NYU theater students with a private Lady Gaga concert.

The Big Bang Theory (9:31 p.m., CBS3) - Penny becomes injured and has to rely on Sheldon.

CSI: Miami (10 p.m., CBS3) - Los Angeles Laker Pau Gasol guest-stars as a "person of interest" in a car accident.

The Jay Leno Show (10 p.m., NBC10) - Taylor Lautner; Heather Locklear.

Lopez Tonight (11 p.m., TBS) - The star of a long-running ABC family sitcom takes on a talk show with guests.

Late Show With David Letterman (11:35 p.m., CBS3) - Sharon Stone; comic Seth Meyers.

The Tonight Show With Conan O'Brien (11:35 p.m., NBC10) - Kristen Stewart; Judd Apatow; Carrie Underwood performs.

The Late Late Show With Craig Ferguson (12:37 a.m., CBS3) - LL Cool J; Mindy Kaling; Ben Harper and Relentless7 perform.

Late Night With Jimmy Fallon (12:37 a.m., NBC10) - Tim McGraw; Anna Torv; chef Josh Capon.