The Ellen DeGeneres Show
(3 p.m., NBC10) - Josh Duhamel.
The Oprah Winfrey Show (4 p.m., 6ABC) - A daughter shares videos made for her by cancer-stricken mother.
The Big Bang Theory (8 p.m., CBS3) - Bernadette gets her doctorate, which means Howard is the only one in the group without one.
The Mentalist (9 p.m., CBS3) - The identity of Red John's mole inside the CBI is revealed, and Patrick faces his nemesis.
Grey's Anatomy (9 p.m., 6ABC) - Meredith's dishonesty in the clinical trial is revealed.
Private Practice (10:01 p.m., 6ABC) - The doctors decide whether to expose the flaws in the practice and risk some terminations or dissolve it and go their separate ways.
Parks and Recreation (10:30 p.m., NBC10) - Leslie and her colleagues arrange a memorial service for a friend.
The Daily Show With Jon Stewart (11 p.m., COM) - EPA Administrator Lisa P. Jackson.
Conan (11 p.m., TBS) - Will Ferrell; Paul Bettany; James Blunt performs.
The Colbert Report (11:31 p.m., COM) - Kareem Abdul-Jabbar.
Late Show With David Letterman (11:35 p.m., CBS3) - Kelly Ripa; Jennifer Lawrence.
The Tonight Show With Jay Leno (11:35 p.m., NBC10) - Jack Black; Mike Huckabee; Parachute performs.
Jimmy Kimmel Live (Midnight, 6ABC) - Albert Brooks; author Chaz Bono; Rammstein performs.
Lopez Tonight (Midnight, TBS) - Rosario Dawson; Prince performs.
The Late Late Show With Craig Ferguson (12:37 a.m., CBS3) - Tony Shalhoub; author Sloane Crosley.
Late Night With Jimmy Fallon (12:37 a.m., NBC10) - Ellen Barkin; Chris Hardwick.