Friends (8 p.m., NBC) kicks off its eighth season with Monica and Chandler acting weirder than usual as they prepare to tell her parents they're engaged. It's also premiere night for Whose Line Is It Anyway? (8 p.m., ABC). Emmy winner Will & Grace (9 p.m., NBC) begins its third season by taking over NBC's most prestigious sitcom time slot of the week. Kyle Secor (Detective Tim Bayliss from "Homicide") joins the cast of City of Angels (9 p.m., CBS) as it kicks off its new season. Like his "Homicide" partner Andre Braugher (star of the new "Gideon's Crossing"), Secor has forsaken cop work to play doctor. Finch and Nina face the aftermath of their season-ending kiss in the opener of Just Shoot Me (9:30 p.m., NBC). On the season premiere of ER (10 p.m., NBC), Carter gets out of rehab and the hospital is in the grips of a custodians strike.

Sports

Baseball:
National League Championship Series, Game 2:
Mets at Cardinals (8 p.m., Fox)

Hockey:
Flyers at Stars (8 p.m., ESPN2)

Talk

Rosie O'Donnell (syndicated) Minnie Driver, Jane Seymour
David Letterman (CBS) Spike Lee
Jay Leno (NBC) Heather Locklear, James Van Der Beek, Jewel
Politically Incorrect (ABC) Shelley Long, Bruce Davison
Conan O'Brien (NBC) Steve Martin, Nikki Cox

All times Eastern unless noted.