8 p.m., FOXElton John, Annie Lennox, and the Black Eyed Peas take the stage to raise money for several charities—but the goodwill ends when one of the seven remaining contestants is eliminated.
Season 1 finale, 8:30 p.m., CBSJenna Elfman) fakes going into labor to get Zach (Jon Foster) out of a speeding ticket, then goes into labor for real.
10 p.m., NBCMariska Hargitay) goes undercover to find the killer of a woman who was trying to expose the dirty secrets of the meatpacking industry.
10 p.m., BRAVO
11:30 p.m., COMEDYMichelle Obama Craig Robinson.
Also on the airwaves...
The New Adventures of Old Christine, 8 p.m., CBS
Mercy, 8 p.m., NBC
America's Next Top Model, 8 p.m., CW
Fly Girls, 9 p.m., CW
High Society, 9:30 p.m., CW
Dog the Bounty Hunter, 10 p.m., A&E;
South Park, 10 p.m., COMEDY
In Plain Sight, 10 p.m., USA
Ugly Americans, 10:30 p.m., COMEDY
NBA Basketball Playoffs: Bobcats v. Magic, Spurs v. Mavs
MLB Baseball: Phillies v. Braves
NHL Hockey Playoffs: Sabres v. Bruins
What are you watching tonight?
Follow TV.com writer Stefanie Lee on Twitter: @StefAtTVDotCom