TONIGHT: John Stamos rocks out alongside The Beach Boys on Dancing With the Stars, it's a Jin-and-Sun-centric Lost episode, Usher mentors on Idol, V returns with a new episode, Rumer Willis' same-sex kiss on 90210, and The Biggest Loser's teams are dissolved.

8:00 PM

Dancing With the Stars The Beach Boys perform with John Stamos, Adam Carolla stops by to give the dancers his advice, Hatian dancers pay tribute to their country, and of course—someone gets voted off! (ABC)
90210 Dixon bonds with his birth mother, Debbie grows closer to her yoga instructor, Arianna goes on a date with Gia, and Teddy tries to make Silver jealous. (The CW)
American Idol The top 10 contestants perform soul and R&B songs, Usher is this week's mentor. (Fox)
The Biggest Loser: Couples Tonight's the episode of the season where the teams are dissolved and it's everyone for themselves. (NBC)
My First Home Andrea, an Indiana native is looking for her first home in Newport Beach, California. (TLC)
Future Food Series Premiere. Chicago restaurateurs Homaro Cantu and Ben Roche are world-renowned chefs whose knowledge of food is matched only by their scientific knowledge of how various foods and other substances work together to create "future food." (Planet Green)

9:00 PM

Lost Sun and Jin keep searching for each other in an episode that revolves around the pair, the smoke monster faces his enemy. (ABC)
Melrose Place Ella discovers she's being framed for embezzlement, Michael blackmails Lauren, and Drew goes out with Riley on a sweet date. (The CW)
19 Kids and Counting The Duggar family takes part in a radio-fundraiser (what year is this again?) for an Arkansas Children's Hospital. (TLC)

10:00 PM

Parenthood Drew helps Adam bond with Max, Sarah gets close to Amber's teacher, and Crosby feels pressure to have another kid. (NBC)
V The show returns in full swing tonight: the Resistance gains a dangerous new member, Val's pregnancy concerns Ryan, Anna is puzzled by Chad, and Erica gets attacked at home. (ABC)
Millionaire Matchmaker Patti's two millionaires seeking love tonight include a trust-funder looking for a show business career and a chauvinistic film producer. (Bravo)
Little Chocolatiers Tonight the bite-size pair create a life-sized chocolate desk with all the trimmings—chocolate books, papers, pencils, and more! (TLC)
16 and Pregnant Nicole & her boyfriend become pregnant and not everyone in the family is supportive. (MTV)
Justified As Raylan hunts for an informer, two ex-cons with violence on the brain are seeking Raylan out. (FX)
Law & Order: Criminal Intent Season Premiere, Part One of Two. Goren and Eames investigate the murder of a wealthy businessman and his girlfriend, Ross receives a special offer. (NBC)

Who's on the Late Night Couches Tonight?

The Daily Show: Robin Williams (Comedy Central)
The Colbert Report: Simon Johnson (Comedy Central)
Jimmy Kimmel Live: Miley Cyrus, the first "Dancing with the Stars" castoff, Erykah Badu (ABC)
Lopez Tonight: Ludacris, Clark Duke (TBS)
Chelsea Lately Johnny Weir (E!)
The Tonight Show with Jay Leno: Joy Behar, Thomas Haden Church (NBC)
Late Night with Jimmy Fallon: Edward Norton, Chuck Liddell, Moshe Kasher (NBC)
Last Call with Carson Daly Snoop Dogg, Keane (NBC)
Late Show with David Letterman: Luke Wilson, Pam Stout, Alan Jackson (CBS)
Late Late Show with Craig Ferguson: Greg Kinnear, Amanda Righetti, VV Brown (CBS)