On Buffy the Vampire Slayer (8 p.m., WB), Riley suffers some dangerous side effects of the Initiative's experimentation. OK, there have been three lousy episodes so far this season -- it may be time to panic. Freaks and Geeks (8 p.m., Fox Family Channel) airs another never-before-seen episode. Yay! JAG (8 p.m., CBS) does its very own version of the Elián González affair as Harm is called in to adjudicate when a U.S. ship rescues a Cuban girl at sea. Teddie is jealous of Max's former girlfriend on The Geena Davis Show (8:30 p.m., ABC). "Geena Davis" is not unwatchable. It's watchable, in a horrifying way. On Angel (9 p.m., WB), our boy befriends a runaway with telekinetic powers, unaware he's being set up. The new series Biographies in Black (10 p.m., Black Entertainment Television) profiles political, entertainment and sports figures. This week's show features Russell Simmons.
Al Gore and George W. Bush face the nation, town meeting style, in their final debate (9 p.m. EDT/6 p.m. PDT, ABC, CBS, PBS, CNN, C-Span, MSNBC, FNN).
American League Championship Series, Game 6
Mariners at Yankees (8 p.m., NBC)
Blues at Red Wings (7:30 p.m., ESPN2)
Rosie O'Donnell (syndicated) Helen Hunt, Andre Braugher, Lucy Lawless
David Letterman (CBS) Helen Hunt, Willie Nelson
Jay Leno (NBC) Charlie Sheen, Michelle Rodriguez, P.J. Harvey
Politically Incorrect (ABC) Susan Estrich, Mercedes Ruehl
Conan O'Brien (NBC) James Caan, Anthony Clark
All times Eastern unless noted.