Chandler's ex, Janice (of the braying laugh), gets herself on the wedding guest list on Friends (8 p.m., NBC). On Gilmore Girls (8 p.m., WB), Lorelai freaks when she finds out from a third party that Rory has a boyfriend. Robin Williams drops by Whose Line Is it Anyway? (8:30 p.m., ABC) for some laid-back, quiet improvs. Will & Grace (9 p.m., NBC) scores the casting coup of November sweeps with a guest appearance from Cher. Her Royal Cherness plays herself, as Jack finally gets to meet his idol. Sally Field begins a multiple-episode stint on ER (10 p.m., NBC); she plays Abby's troubled mom, and Abby is none too happy to see her.
Relive the magic on Cops: The Top 15 Moments of All Time (8 p.m., Fox), a two-hour recap of all your favorite chases, mishaps and domestic disturbances.
Lakers at Kings (8 p.m., TNT)
Devils at Bruins (7 p.m., ESPN2)
Avalanche at Coyotes (10 p.m., ESPN2)
Rosie O'Donnell (syndicated) Gwyneth Paltrow, Andy Garcia
David Letterman (CBS) Gwyneth Paltrow, Chris Elliott
Jay Leno (NBC) Ben Affleck, Rodney Dangerfield
Politically Incorrect (ABC) Kelsey Grammar, Steven Weber
Conan O'Brien (NBC) Mick Foley
Craig Kilborn (CBS) Charlize Theron
All times Eastern unless noted.