TONIGHT: Lots! We've got new episodes of Vampire Diaries, The Big Bang Theory, Community, The Office, Outsourced, The Real Housewives of Beverly Hills, Grey's Anatomy, CSI, 30 Rock, Fringe, Nikita, It's Always Sunny in Philadelphia, The Apprentice, and much more.

8:00 PM

Community Abed becomes a "mean girl" to the delight of Britta, Shirley and Annie, whose encounter with a cruel classmate (Hilary Duff) leaves them reeling. Elsewhere, Jeff and Troy find a hidden trampoline, which provides the duo spiritual enlightenment. The change in their personalities doesn't go unnoticed, however, and Pierce becomes determined to get to the bottom of things. (NBC)
Bones Hannah may be reminded of her war-correspondent days when she's assigned to a story in a dangerous part of town. Meanwhile, a skull found at a construction site is linked to a dancer's decision to switch from ballet to hip-hop. Stephen "tWitch" Boss ("So You Think You Can Dance") guest stars. (FOX)
Vampire Diaries Elena is abducted by a masked stranger at the masquerade ball, and Stefan and Damon learn surprising information about vampires in the distant past. Meanwhile, Jeremy helps Bonnie after she casts an exhausting spell, and Caroline tries to make life easier for Tyler now that he is a werewolf. (CW)
The Big Bang Theory Howard baffles Sheldon when he won't accept his apology; and an FBI agent (Eliza Dushku) interviews the guys for Howard's security clearance. (CBS)

8:30 PM

30 Rock Jack works to set relationship boundaries with Liz to placate Avery. Meanwhile, Liz tends to her visiting father (Buck Henry), who's mired in a life crisis. And Tracy views his own video obituary, then sets out to reinvent himself. Not to be outdone, Jenna produces her own video obit. (NBC)
$#*! My Dad Says Ed develops a liking for Vince's new dog, which makes Vince jealous. Meanwhile, Henry agrees to go out with Vince and Bonnie's boss (Missi Pyle) to help them get a real-estate listing. (CBS)

9:00 PM

The Office Michael invites all the staffers to celebrate the christening of Jim and Pam's baby. (NBC)
Fringe A security breach in the parallel universe attracts the Fringe Division's attention after a man frees his twin brother from a quarantined amber area. Meanwhile, Secretary Bishop observes the effects of sensory deprivation on Olivia, who continues to have visions of Peter. (FOX)
CSI The shredded remains of a man are discovered and the investigation uncovers evidence that points to multiple suspects (CBS)
Grey's Anatomy Owen puts the residents through a tough trauma-certification drill, pushing them to their limits. And Cristina faces a test when she's charged with monitoring a critically ill lung-transplant patient. (ABC)
Nikita Division agrees to kill a woman having an affair with a senator in exchange for continued government funding. Meanwhile, Nikita and Alex contact the woman's parents, but the conversation doesn't go as planned. (CW)

9:30 PM

Outsourced Todd tries to make himself a viable suitor for Asha, who's inching closer to an arranged marriage. When Madhuri discovers Todd's intentions, she comes up with a plan for him to surprise Asha. Elsewhere, Gupta tries to kick a bad habit with help from Rajiv. (NBC)

10:00 PM

It's Always Sunny in Philadelphia The gang is growing as a result of a blast from the past, which also prompts Dee to reconsider her future. (FX)
The Real Housewives of Beverly Hills Taylor spends no less than $50,000 on an extravagant tea party for her daughter's fourth birthday, yet that pales next to the gift her husband presents. Elsewhere, Camille unwinds at her Hawaii home while shedding light on her marriage, and a birthday surprise awaits Lisa. (Bravo)
Private Practice The doctors come to Charlotte's aid after she's found bloodied and bruised in a hospital hallway after she's attacked by a deranged man (Nicholas Brendon) in the ER. (ABC)
The Apprentice The candidates must produce a four-page advertorial for Donald Trump's fashion line, but there's not much model behavior when one project manager grows infatuated with a model and the other manager disrobes for a risqué scene. (NBC)
The Mentalist The team escapes tragedy when they investigate a death threat, and the building they're in explodes; and Lisbon runs into billionaire Walter Mashburn and there's chemistry between them. (CBS)

Who's on the Late Night Couches Tonight?

The Daily Show: Rosario Dawson (Comedy Central)
The Colbert Report: Elvis Costello
(Comedy Central)
Jimmy Kimmel Live!: Ellen Pompeo, Randy Oitker, Paul Weller (ABC)
Lopez Tonight: Andy Richter, Katie Cassidy, Good Charlotte (TBS)
Chelsea Lately Connie Britton, Diablo Cody, John Caparulo, Ross Mathews (E!)
The Tonight Show with Jay Leno: Anne Hathaway, San Francisco Giant Brian Wilson, Aaron Neville (NBC)
Late Night with Jimmy Fallon: Dr. Phil McGraw, Nina Dobrev, Duffy (NBC)
Late Show with David Letterman: Steve Martin, Emily Deschanel (CBS)
Late Late Show with Craig Ferguson: Dick Van Dyke, Kerry Washington (CBS)