Bette Midler plays a showbiz diva much like herself -- OK, it is herself -- in the new sitcom Bette (8 p.m., CBS). In the words of David Letterman, CBS is going for the "highly coveted, over-55, gay male viewer" demographics with this one. Speaking of Letterman, his Worldwide Pants company produces the new sitcom Welcome to New York (8:30 p.m., CBS), starring Jim Gaffigan as a weatherman from Indiana who relocates to the Big Apple to seek TV fame. Remind you of a certain late night talk show host? Christine Baranski costars as the acerbic producer of a morning talk show. Felicity (9 p.m., WB) has boy trouble -- Ben's dad (John Ritter) is in town seeking a reconciliation and Noel needs an intervention.
Vice President Al Gore and Gov. George W. Bush meet in their second presidential debate (9 p.m. ET/6 PT, ABC, CBS, NBC, PBS, CNN, C-Span, MSNBC, Fox News). This one's an informal round-table discussion moderated by Jim Lehrer.
Canadiens at Rangers (7 p.m., ESPN2)
Blues at Kings (10 p.m., ESPN2)
American League Championship Series, Game 2:
Mariners at Yankees (4 p.m., NBC)
National League Championship Series, Game 1:
Mets at Cardinals (8 p.m., Fox)
Rosie O'Donnell (syndicated) Bette Midler, Joan Allen
David Letterman (CBS) Jason Alexander, Foo Fighters
Jay Leno (NBC) Noah Wyle, Chyna, Collective Soul
Politically Incorrect (ABC) Peter Boyle, Naomi Judd
Conan O'Brien (NBC) Ralph Nader, Larry David
All times Eastern unless noted.