8 p.m., FOXEmily Deschanel) becomes emotionally attached to the victim when she discovers how much they have in common.
8 p.m., NBCDanny Pudi) wakes up in a stop-motion animated dream world, so the rest of the study group decides to undergo hypnosis to join him there... and find the true meaning of Christmas! Trust us, it’ll make sense when you watch it.
9 p.m., ABC
Barbara Walters SpecialIn the first hour of her annual year-end special, Barbara Walters interviews Oprah about her 25-year career and her new network. In the second hour, Barbara reveals her list of the 10 most fascinating people of 2010, which includes Justin Bieber, Kate Middleton, Betty White, and the Jersey Shore cast.
9 p.m., NBCSteve Carell)! In this double-length episode, Toby (Paul Lieberstein) takes a leave of absence—so Holly Flax (guest star Amy Ryan) comes to Scranton to fill in for him. Plus, Jim (John Krasinski) and Dwight (Rainn Wilson) have a snowball fight.
10 p.m., FXKaitlin Olson) due date approaches, the gang decides to invite all of her ex-boyfriends to a party to figure out who the father of her baby is. My money’s on one of the McPoyle twins, as gross as it may sound.
Season 2 finale, 10:30 & 11 p.m., FXKatie Aselton) worries that her fantasy football involvement may be affecting her daughter’s behavior at school. Then in the season finale, Kevin (Steve Rannazzisi) learns to read lips by watching porn, Pete (Mark Duplass) buys a new car, and the winners of the Shiva and the Sacko are revealed.
Also on the airwaves...
The Big Bang Theory, 8 p.m., CBS
The Vampire Diaries, 8 p.m., CW
$#*! My Dad Says, 8:30 p.m., CBS
30 Rock, 8:30 p.m., NBC
CSI, 9 p.m., CBS
Fringe, 9 p.m., FOX
Nikita, 9 p.m., CW
The Mentalist, 10 p.m., CBS
The Apprentice, Season 10 finale, 10 p.m., NBC
The Real Housewives of Beverly Hills, 10 p.m., BRAVO
Ace of Cakes, 10 p.m., FOOD
Burn Notice, 10 p.m., USA
NBA Basketball: Celtics v. 76ers, Magic v. TrailBlazers
NHL Hockey: Panthers v. Capitals
NCAA Basketball: Butler v. Xavier, Kent State v. Florida, Georgetown v. Temple
What are you watching tonight?
Follow TV.com writer Stefanie Lee on Twitter: @StefAtTVDotCom