Dawson's Creek (8 p.m., WB) reruns the one where Joey and Pacey are left behind at the ski lodge alone. The West Wing (9 p.m., NBC) unearths a very early episode of the series, in which Charlie applies for a White House job and Bartlet reacts surprisingly to the shooting down of an American plane in the Middle East. Buffy goes on a vision quest in the desert while Spike has fun with his Buffy-bot on a rerun of Buffy the Vampire Slayer (9 p.m., WB). Nick at Nite begins a weekly Pop-Up Brady (9 p.m., Nickelodeon) version of "The Brady Bunch," and it doesn't improve things one bit. The cops and prosecutors have a case of "sports rage" on their hands on a rerun of Law & Order (10 p.m., NBC). Jiminy interviews Nathan Lane and Molly Shannon on Primetime Glick (10:30 p.m., Comedy Central). Also, Jiminy's black sheep brother (Joe Flaherty) sells Glick secrets to a tabloid.
Sigourney Weaver narrates the two-part documentary The Roman Empire in the First Century (8 p.m., PBS, check local listings) -- everything you always wanted to know about Caligula but wish you didn't. The '80s hair metal band that gave us the immortal "Pour Some Sugar on Me" gets its very own TV movie, Hysteria: The Def Leppard Story (9 p.m., VH1). Orlando Seale, Tat Whalley and Anthony Michael Hall (as producer "Mutt" Lange) star in this cautionary tale about the fickle ways of the music biz, not to mention the dangers of alcohol and reckless driving.
Cardinals at Astros (7 p.m., ESPN)
Braves at Reds (7 p.m., ESPN2)
David Letterman (CBS) John McEnroe, Youssou N'Dour
Jay Leno (NBC) Tom Cavanagh, Melissa Etheridge
Politically Incorrect (ABC) Caroline Rhea, Regina King (rerun)
Conan O'Brien (NBC) William H. Macy, Jordana Brewster
Craig Kilborn (CBS) Thora Birch
All times Eastern unless noted.