Margot Kidder is the subject of a new Biography (8 p.m., A&E). Paul Reubens continues jacking us around on You Don't Know Jack (8:30 p.m., ABC). The West Wing (9 p.m., NBC) reruns the one where the elderly senator filibusters all weekend, seriously cutting into staffers' leisure time. On Buffy the Vampire Slayer (9 p.m., WB), a lovelorn robot girl wreaks havoc on Sunnydale. It seemed goofy at the time, but now we know this is a pivotal episode, setting up the death of Buffy's mom as well as Spike's fling with the Buffybot. The cable series Soul Food (10 p.m., Showtime) begins a new season. Fresh from last week's triumphant episode in which characters said the word "shit" 162 times to make an anti-censorship point, South Park (10 p.m., Comedy Central) airs another new episode, in which Big Gay Al becomes the boys' scoutmaster. Martin Short dons the fat suit to interview Jerry Seinfeld and Dennis Miller on Primetime Glick (10:30 p.m., Comedy Central).
The two-part miniseries Gormenghast (9 p.m., PBS, check local listings) is a surreal adaptation of Mervyn Peake's cultish fantasy trilogy about a demented ruling class family. Starring Jonathan Rhys Meyers, Ian Richardson, Christopher Lee, Zoe Wanamaker, Lynsey Baxter and Celia Imrie.
Braves at Phillies (1 p.m., ESPN)
Dodgers at Giants (7 p.m., ESPN)
White Sox at Twins (7 p.m., ESPN2)
Wimbledon (11 a.m., TNT)
NBA draft (7:30 p.m., TNT)
Rosie O'Donnell (syndicated) Roma Downey, Marcia Gay Harden (rerun)
David Letterman (CBS) Marlon Wayans, Coldplay
Jay Leno (NBC) James Woods, Tank the Bear
Politically Incorrect (ABC) Arsenio Hall, Rick Fox
Conan O'Brien (NBC) Bridget Fonda, Kevin Pollak
Craig Kilborn (CBS) Jackie Collins, Ian Hunter
All times Eastern unless noted.