America's Toughest Jobs (8-9 p.m., NBC10) - The seven remaining contestants clean and paint the Vincent Thomas Bridge in the port of Los Angeles. Three hundred thirty-five feet above the water, they work late into the night changing bridge lights. The contestant who cannot overcome a fear of heights is sent home.

The Ex List (9-10 p.m., CBS3) - This new comedy-drama stars Elizabeth Reaser (Grey's Anatomy) as Bella, a young woman who learns from a psychic that she has already met and dated the man she is destined to marry. But she has to reconnect with him within a year, or it's a one-way ticket to Spinsterville.

Sanctuary (9-11 p.m., S-F) - Created for the Internet, this sci-fi series makes its television debut with a two-hour episode. Amanda Tapping stars as Helen Magnus, an extremely well-preserved 150-plus-year-old doctor who monitors the supernatural creatures that walk the Earth.

Late Show With David Letterman (11:35 p.m.-12:35 a.m., CBS3) - News anchor Brian Williams; actor Tim Robbins.

The Tonight Show With Jay Leno (11:35 p.m.-12:35 a.m., NBC10) - Actress Molly Shannon; retired football player Warren Sapp (Dancing With the Stars); T.I. performs.

Jimmy Kimmel Live (12:05-1:05 a.m., 6ABC) - Actor Martin Short; Solange Knowles performs.

The Late Late Show With Craig Ferguson (12:35-1:35 a.m., CBS3) - Comic Margaret Cho; musician Randy Newman.

Late Night With Conan O'Brien (12:35-1:35 a.m., NBC10) - Actor Greg Kinnear; Nick Cave and the Bad Seeds perform.