TONIGHT: Kathy Griffin goes gay on Law & Order, the series finale of Nip/Tuck, Real World housemates decide if they want to kick Ty out, Oprah's Oscar special, and who's making the rounds on the Late Night couches tonight.

8:00 PM
 American Idol The top ten girls perform. (Fox)
Faces of America The series finale of this very enjoyable show will have Henry Louis Gates showing Meryl Streep, Yo-Yo Ma, and Eva Longoria new information about their family genealogy. (PBS)
Mercy James Van Der Beek guest stars as Briggs, who also works in the ER. (NBC)
New Adventures of Old Christine When Christine's new business becomes profitable for the first time, she has some decisions to make. Ed Begley Jr. guest stars. (CBS)

9:00 PM
 Ghost Hunters Tonight, which marks the sixth season premiere for the show, will celebrate their 100th episode with a trip to Alcatraz. (SyFy)
Law & Order: SVU Finally! The episode where Kathy Griffin makes out with Mariska Hargitay airs tonight. (NBC)
Criminal Minds A child-abuction case has similarities to another case that's eight years old. (CBS)
Mayday! Bering Sea Details from the 2008 sinking of the Alaska Ranger and the surrounding rescue efforts. (Discovery)
Cougar Town (9:30) Beverly D'Angelo guest-stars as Laurie's absent mother. Cougars: they're just so crazy right?! (ABC)
Supernatural Paris Hilton joins the show for an episode about fallen idols. She'll play a dead version of herself—one of the "idols" among James Dean and Abraham Lincoln. Really?! (Living)
Modern Family When Phil goes on a backyard camping adventure, his masculinity is called into question when it comes to bugs and the dark. (ABC)

10:00 PM
 Nip/Tuck Tonight is the series finale—but don't expect any over-the-top finale cliches. Inside TV says the show will wrap up with "storylines that are true to the characters we've come to know and love for six seasons."
High School Reunion The season finale of the show also coincides with their high school prom. (TV Land)
The Locator Tonight's season four premiere means more tear-jerking reunions between long-lost family members! (WE)
Oprah WInfrey's Oscar Special Who needs Barbara Walters' special when the Queen of television has an Oscar special of her own? Michael Douglas interviews "Fatal Attraction" co-star Glenn Close, Halle Berry interviews Penelope Cruz, Ben Affleck interviews Jeremy Renner, and James Cameron interviews the cast of "Avatar." (ABC)
CSI: New York a 21-year-old goes out partying and ends up with an ax and a bunch of dead friends. CSI team, assemmmmbleeee! (CBS)
1000 Ways to Lie Not to be confused with their other show, 1000 Ways to Die, this show will focus on over-the-top lies. (Spike)
Dinner: Impossible The host of the show prepares a meal for 150 at the Philadelphia's Packer Ave Marine Terminal. (Food Network)
Psych Jeri Ryan and Michael Hogan guest star in an episode about a shark-attack victim. (USA)
The Real World The roommates have to decide if they feel comfortable living in the same house as roommate Ty, who tossed Andrew off a balcony during last week's episode. Will Andrew be okay? (MTV)
Shear Genius Contestants must turn military wives into pin-up girls so that they can send their soldiers some sexy photos from home. (Bravo)
Tosh.0 (10:30) Daniel Tosh tackles the week in viral video, including a discussion of the Epic Beard Man and a Web Redemption for the "Make it Snow" girl. (Comedy Central)

Who's on the Late Night Couches Tonight?
 The Daily Show: Lynne Olson (Comedy Central)
The Colbert Report: Garry Wills (Comedy Central)
Jimmy Kimmel Live: Ethan Hawke, Jet (ABC)
Lopez Tonight: Mario Lopez, T-Pain (TBS)
Chelsea Lately Heather McDonald, Matt Braunger (E!)
The Tonight Show with Jay Leno: The Cast of Jersey Shore, Chelsea Handler, Apolo Anton Ohno, Avril Lavigne (NBC)
Late Night with Jimmy Fallon: Barbara Walters, Regina King, Erykah Badu (NBC)
Last Call with Carson Daly Jeremy Renner, Grizzly Bear (NBC)
Late Show with David Letterman: Jerry Seinfeld, Tom Brokaw (CBS)
Late Late Show with Craig Ferguson: Michael Sheen, Amy Ryan (CBS)

What will you be tuning into tonight? Let us know in the comments.