On Friends (8 p.m., NBC), Phoebe learns how to ride a bike and Rachel has to evaluate Tag's, um, performance. Gilmore Girls (8 p.m., WB) reruns the episode where Rory and her grandfather bond over a game of golf. Warning: This episode contains scenes of a seminude Edward Herrmann in a sauna. It's Christmas down under (the sea) for the happy yellow household sponge and his pals on Spongebob Squarepants (8:30 p.m., Nickelodeon). On ER (10 p.m., NBC), Abby's mom has a job interview, Corday is deposed and Benton learns more about his nephew's death.

Specials

What would you pay for this Soviet spacecraft? How about the Cowardly Lion costume? How about a genuine dinosaur skeleton? Operators are standing by to accept your bids on The Ultimate Auction (8 p.m., Fox). Tom Hanks narrates the two-hour documentary Shooting War (9 p.m., ABC), a Steven Spielberg-produced look at the combat cameramen and photographers who recorded the horrors of World War II. Includes interviews with veteran shutterbugs and stark footage of the Allied landing on Omaha Beach, Nazi death camps and the aftermath of the atomic bomb on Nagasaki.

Sports

Basketball:
Knicks at Spurs (8 p.m., TNT)

Hockey:
Wild at Blackhawks (8 p.m., ESPN2)

Talk

Rosie O'Donnell (syndicated) Katie Couric, the Sugar Beats
David Letterman (CBS) Gillian Anderson, Foo Fighters (rerun)
Jay Leno (NBC) George W. Bush or Al Gore (TBA, rerun)
Conan O'Brien (NBC) Darrell Hammond, Joy Behar (rerun)
Craig Kilborn (CBS) Ray Romano, Adam West (rerun)

All times Eastern unless noted.