8 p.m., CWAnnaLynne McCord) and Liam (Matt Lanter) spend some quality time together on Liam's boat, and Adrianna (Jessica Lowndes) and Gia (Rumer Willis) "connect" over an AA meeting experience. Another classy episode of 90210.
Season 1 finale, 8 p.m., ANIMAL
9 p.m., ABCMichael Emerson) deals with the repercussions of a lie. Plus, Charles (Alan Dale), Alex (Tania Raymonde), and Leslie (Daniel Roebuck) make appearances. Woo, random guest-star reunion!
10 p.m., NBCLauren Graham) begins her job hunt and Crosby (Dax Shepard) gets to know his (new) son.
Season 1 finale, 10 p.m., USAMatthew Bomer) and Alex (Gloria Votsis) team up to snatch the music box from the Italian consulate. I don't know what that means, but I'm intrigued.
Also on the airwaves...
NCIS, 8 p.m., CBS
American Idol, 8 p.m., FOX
The Biggest Loser, 8 p.m., NBC
NCIS: Los Angeles, 9 p.m., CBS
Melrose Place, 9 p.m., CW
RuPaul's Drag Race, 9 p.m., VH1
The Forgotten, Season 1 finale, 10 p.m., ABC
The Good Wife, 10 p.m., CBS
The Michael Vick Project, 10 p.m., BET
Millionaire Matchmaker, 10 p.m., BRAVO
Southland, 10 p.m., TNT
NHL Hockey: Islanders v. Flyers
What are you watching tonight?
Follow TV.com writer Stefanie Lee on Twitter: @StefAtTVDotCom