In the hourlong season finale of Friends (8 p.m., NBC), Monica and Chandler's wedding day is here, but the groom is nowhere to be found. Have they checked the Betty Ford Center? CBS tries to counter "Friends" with a bonus rerun of CSI: Crime Scene Investigation (8 p.m., CBS), which leads into a season finale at 9 p.m. in which the FBI pokes into Grissom's investigation of a serial killing. The FBI? Grissom has nothing to worry about. Shannen Doherty makes her final appearance on Charmed (9 p.m., WB), which has its season finale. On the one-hour season finale of Will & Grace (9 p.m., NBC), Nathan (Woody Harrelson) moves in with Grace (and Will), and Jack may have finally found his father. ER (10 p.m., NBC) has a season finale punctuated by gunshots at a foster care facility.

Specials

In the two-hour special America's Most Wanted Presents Judgment Night: DNA the Ultimate Test (8 p.m., Fox), DNA tests are performed on criminals who dispute their convictions. Yes, another night of fine entertainment from Fox!

Sports

NHL playoffs:
Devils at Penguins, Game 3 (7 p.m., ESPN)

NBA playoffs:
Bucks at Hornets, Game 6 (8 p.m., TNT)

Talk

Rosie O'Donnell (syndicated) Mike Myers, the Go-Go's
David Letterman (CBS) Ricky Martin, Jack Hanna
Jay Leno (NBC) Jennifer Lopez, Steve Irwin
Conan O'Brien (NBC) Kathie Lee Gifford, Leah Remini

All times Eastern unless noted.