TONIGHT: We've got the season premiere of In Treatment and the season finale of Thintervention, plus new episodes of Lie to Me, The Real Housewives of Atlanta, The Event, Mike & Molly, Chase, Hawaii Five-0, DWTS, HIMYM, Chuck, and more!

8:00 PM

Dancing with the Stars The sixth week of performances features celebrities dancing to rock-and-roll songs. (ABC)
90210 Jen and Ryan learn the truth about Naomi's rape and Jen decides to avenge her sister; Liam's job as a shirtless store-window model leads to an intriguing offer from a customer; Victor asks Adrianna to remove her top during a photo shoot; Annie sees Charlie's dark side; and Laurel gets surprising news. The band the Like perform. (CW)
How I Met Your Mother Without telling each other, Marshall and Lily research to see if it's possible to choose the gender of their child; and Robin grows more frustrated with her new coanchor, Becky. (CBS)
Chuck Team Bartowski battles a sinister scientist (Robert Englund) who is plotting to release toxins that induce nightmares. Meanwhile, the true allegiances of Chuck's mother (Linda Hamilton) come under scrutiny, and the Buy More gang celebrates Halloween. (NBC)

8:30 PM

Rules of Engagement Audrey starts her own cookie business after she gets bored with not having a job; and Timmy tries to fit in with the other guys. (CBS)

9:00 PM

Lie to Me The Lightman Group's expertise is called into question when a woman (Tricia Helfer ) plays cat-and-mouse with Cal while he's checking for security leaks at an art museum prior to a major exhibition. (FOX)
In Treatment In the third-season premiere, Paul begins seeing Sunil (Irrfan Khan), a widower from Calcutta whose relocation to his son's home in New York is marred by loneliness, depression and a tense cohabitation with his daughter-in-law (Sonya Walger). (HBO)
Gossip Girl Jenny returns to the Upper East Side when she gets a chance to meet Tim Gunn (appearing as himself). Elsewhere, Serena learns something about Colin that may force her to end things with him. (CW)
The Event President Martinez and Sterling suspect a mole is in their midst; Sean searches for answers at Leila's home, where he meets a mysterious conspiracy theorist (Paula Malcomson); Simon's allegiances are tested. (NBC)
Two and a Half Men Charlie dates a woman who's slightly older, but the age difference is just enough to trouble him. (CBS)
The Real Housewives of Atlanta Mired in marital problems, NeNe looks to cheer herself up—-through plastic surgery. Meanwhile, Phaedra and Cynthia connect at a horse-racing event; Kim enlists Kandi to write her next song; and Phaedra plans an overblown horse-race-themed baby shower. (Bravo)

9:30 PM

Mike & Molly Mike plans for romance when he invites Molly to his apartment, but his hopes are dashed when his mom calls. (CBS)
In Treatment Frances (Debra Winger), an experienced actor of stage and screen whose sister is a former patient of Paul's, starts therapy to discuss her recent trouble remembering lines, but is also distressed by a broken family and her sister's breast cancer, the disease that killed their mother. (HBO)

10:00 PM

Chase While pursuing a fugitive who is using explosives as part of his revenge plan, Annie is injured and must turn to bounty hunter Ben Crowley (Eddie Cibrian) for help. With Annie on the shelf Jimmy must step up and lead the team, which puts Daisy's tactical experience to work in an effort to bring down the criminal, while Luke is forced to take a more pivotal part in the investigation. (NBC)
Castle A serial murderer called the Triple Killer strikes again after disappearing four years ago, and Beckett and Castle scramble to catch him before he takes more victims. (ABC)
Hawaii Five-0 The CEO of a major surf company is murdered. The case is personal for Kono because the victim was her mentor when she surfed professionally. The investigation takes Five-0 into the interconnected worlds of North Shore surfing. (CBS)
Thintervention with Jackie Warner In the Season 1 finale, Jackie's clients return from their six-week solo program to participate in their final weigh-in and bask in a celebration with family and friends. Before-and-after footage of the clients' pound-shedding progress is included. (Bravo)
Weeds Nancy and the gang relocate to her old stamping grounds, where she reconnects with an old chum (Richard Dreyfuss), while Silas and Shane try to dig up dirt on their mother's mysterious past. Meanwhile, Doug and Andy search for someone who can forge a passport. (Showtime)

10:30 PM

The Big C Cathy pays a visit to Andrea's house and is surprised by what she finds, and Rebecca (Cynthia Nixon) breaks up with Sean in an attempt to mend some fences with Cathy. Later, Cathy drops by a church for some spiritual enlightenment and comes clean to Paul about her illness. (Showtime)

Who's on the Late Night Couches Tonight?

The Daily Show Austan Goolsbee (Comedy Central)
The Colbert Report Nicholas Negroponte (Comedy Central)
Jimmy Kimmel Live!: Dr. Mehmet Oz, Mike Birbiglia, K'naan (ABC)
The Tonight Show with Jay Leno Matt Lauer, Martha Stewart, Lauren Pritchard (NBC)
Lopez Tonight: Bryce Dallas Howard, Criss Angel (TBS)
Chelsea Lately Julian McMahon, Arden Myrin, Ross Mathews, Jo Koy (E!)
Late Night with Jimmy Fallon: Molly Shannon, Paul Scheer, Norah Jones (NBC)
Late Show with David Letterman: Charles Barkley, Garry Dell'Abate, Kings of Leon (CBS)
Late Late Show with Craig Ferguson: Condoleezza Rice, Joe Theismann (CBS)