On Buffy the Vampire Slayer (8 p.m., WB), it's Xander times two when the most pathetic of the Scoobys finds himself cloned as the result of a demon attack. Nicholas Brendon's real-life twin plays Xander's doppelgdnger. Dharma and Greg (9 p.m., ABC) opens its new season. Mike Wallace talks with Tipper Gore on the season premiere of 60 Minutes II (9 p.m., CBS). A "lost" episode of Freaks and Geeks (8 p.m., Fox Family), never aired by NBC in its brief network run, finally makes it to the tube. The sitcom we've all been waiting for, The Geena Davis Show (9:30 p.m., ABC), is finally here. Davis plays a kooky businesswoman who falls for a widower (Peter Horton of "thirtysomething" fame) with two kids. But get ready for laffs because Geena doesn't know anything about being a mom! John Daley, who played Sam on "Freaks and Geeks," costars as Horton's horny son. The poor, poor child. Amy picks up the pieces from last season's, um, explosive finale on the season premiere of Judging Amy (10 p.m., CBS). Andre Braugher returns to TV in the new medical drama Gideon's Crossing (10 p.m., ABC). The man with the penetrating stare stars as the chief of experimental medicine at a Boston teaching hospital. He cares, dammit! Paul Attanasio, who created "Homicide: Life on the Street," is at the helm of this one. ABC is running tonight's debut without commercials.
David Macauley continues his fascinating survey of architectural wonders in Part 2 of Building Big (8 p.m., PBS, check local times). This week: domes!
Stars at Hurricanes (7 p.m., ESPN2)
American League Championship Series, Game 1:
Mariners at Yankees (8 p.m., NBC)
Rosie O'Donnell (syndicated) Hillary Rodham Clinton, Scott Foley
David Letterman (CBS) Regis Philbin, Jim Gaffigan
Jay Leno (NBC) Bette Midler, Tim Meadows, Lyle Lovett
Politically Incorrect (ABC) Jane Seymour
Conan O'Brien (NBC) Andy Richter, Steve Buscemi
Craig Kilborn (CBS) Will Ferrell, Eve 6
All times Eastern unless noted.