The Happy Elf (8pm, CW) - An animated musical scored and narrated by Harry Connick Jr. tells the story of Eubie, a jubilant elf who makes it his Christmas Eve mission to save the children of the aptly named Bluesville from another disappointing, Santa-less holiday.
Christmas in Washington (8pm, TNT) - Conan O'Brien hosts the 31st annual holiday gala from the National Building Museum in Washington, D.C., which was recorded on December 9. Performers include Scotty McCreery (in a suit!), Diana Ross, Demi Lovato, Megan Hilty, Chris Mann and Psy. Attendees include the president and the first lady.
Michael Buble: Home for the Holidays (8pm, NBC) - This Christmas special debuted a week or so ago, but it's worth catching if you missed (and if you like Buble). Features Rod Stewart, Blake Shelton and Carly Rae Jepsen. "White House Christmas: First Families Remember" also repeats tonight right after Buble.
Back to the Beginning with Christiane Amanpour (9pm, ABC) - In the first of a two-part series, Christiane Amanpour explores Biblical stories and places in the Middle East to investigate the origins of many of the world's religions.
Fringe (9pm, Fox) - The team call on Nina Sharp to help devise a plan to defeat the Observers, but time is running out in their quest to save the world.
Durham folk rock band Delta Rae will perform on tonight's "Conan" show on TBS.
The Biggest Loser (9pm, NBC) - The winner of the $250,000 prize is awarded in tonight's finale.
The Bearded One is back.