So, you think Buffy came back from the dead with no strings attached? On Buffy the Vampire Slayer (8 p.m., UPN), the Scoobys find out otherwise. Gilmore Girls (8 p.m., WB) has its two-hour season opener, in which Lorelai considers Max's marriage proposal and Rory finds her and Dean growing apart. Nova (8 p.m., PBS, check local listings) presents "18 Ways to Make a Baby," a look at advances in in-vitro fertilization technology. Steven, Lizzie and Rachel buy term papers from a drug-addled townie (Will Ferrell) on Undeclared (8:30 p.m., Fox). On the season premiere of Roswell (9 p.m., UPN), Max and Liz are arrested for armed robbery while trying to gain access to the hidden spaceship that brought Max to earth.
The five-part documentary Local News (10 p.m., PBS, check local listings) looks at one Charlotte, N.C., TV station's struggles to strike a balance between quality journalism and the stuff that gets ratings.
Braves at Astros (1 p.m., Fox Family)
Indians at Mariners (4 p.m., Fox)
Cardinals at Diamondbacks (8 p.m., Fox Family)
Rosie O'Donnell (syndicated) Lance Bass, Joey Fatone
David Letterman (CBS) Tom Cavanagh, Leona Naess
Jay Leno (NBC) Billy Bob Thornton
Politically Incorrect (ABC) Al Franken, Fyvush Finkel
Conan O'Brien (NBC) Lorraine Bracco, Snoop Dogg
Craig Kilborn (CBS) Ming-Na
All times Eastern unless noted.