The X-Factor (8pm, Fox) - The winner is crowned in the first season finale.
Disney Prep & Landing (8pm, ABC) - A veteran elf (voice of Dave Foley) is passed over for a promotion and instead gets paired with an eager rookie. The two encounter a violent snowstorm on Christmas Eve, making their job more challenging. "Prep & Landing 2" follows at 8:30, and "I Want a Dog for Christmas, Charlie Brown" airs at 9.
National Lampoon's Christmas Vacation (9pm, ABC Family) - A classic. Family man Clark Griswold (Chevy Chase) is determined to stay home and provide a warm, fun-filled Christmas for his family. But things don't go exactly as planned.
Braxton Family Values (9pm, We) - Toni needs surgery, so the family gathers around her.
Prime Suspect (10pm, NBC) - NBC is burning off another new episode while they think no one is watching. While, I'm watching. Tonight Jane and Evrard investigate a murder in Chinatown that occurred during a game of mahjongg. Also, Reg shares a secret about Jane with Matt.
The League (10pm, FX) - Two new episodes close out Season 3 tonight. In the first episode, Kevin and Jenny bet on the playoffs and Taco wants Ruxin to get more invovled with Taco Corp. In the second, Taco teams up with the Chicago Bears RB Matt Forte for the Shiva and Sacko Bowls.