What's On TV Tonight? - 12/17/2012

8:00 PM EST

NICK'S PICK: The Voice ("Live Final Performances") - The final three vocalists perform. (NBC)

Gossip Girl ("New York, I Love You XOXO") [SERIES FINALE] - Stars and executive producers say their goodbyes and revisit memorable moments; as the gang joins forces for one more soiree, Gossip Girl's identity is finally revealed. (The CW)

How I Met Your Mother ("The Final Page, Part One" and "The Final Page, Part Two") [WINTER FINALE] - When Barney reveals his plan to propose to Patrice, Ted wonders if he should share the news with Robin; Lily and Marshall run into an acquaintance from college. (CBS)

Extreme Makeover: Home Edition ("Friday Family, Part 1") - The team helps build a home for a family that adopted five siblings so they wouldn't be separated. (ABC)

9:00 PM EST

2 Broke Girls ("And the High Holidays") - Desperate to pay their late rent, Caroline and Max do business with a group of sketchy customers willing to pay a lot of money for cupcakes. (CBS)

Extreme Makeover: Home Edition ("Friday Family, Part 2") - The team helps build a home for a family that adopted five siblings so they wouldn't be separated. (ABC)

1600 Penn ("Putting Out Fires") [SERIES PREMIERE] - The president's son arrives at the White House; South American leaders visit to discuss a trade agreement; the first lady tries to smooth things over with her stepdaughter. (NBC)

9:30 PM EST

Mike & Molly ("Karaoke Christmas") - Mike can't contain his frustration over the amount of money Molly has spent on Christmas shopping; as Molly's family partakes in holiday festivities at home, Mike and Molly spend Christmas Eve at a church with Mike's mother and his boss. (CBS)

10:00 PM EST

Hawaii Five-0 ("Kahu") - McGarret and Catherine meet a boy whose father is missing and could be in grave danger. (CBS)

Take It All [FINALE] - Contestants vie for prizes in a high-stakes competition. (NBC)

Teen Mom 2 ("A Leap of Faith") - Leah and Jeremy make their relationship official; Chelsea's friend convinces her to try therapy; Jenelle meets someone new; Kailyn wants a chance to be with Jo. (MTV)

LATE NIGHT

Conan welcomes Amanda Seyfried; Adam Pally; Jon Dore. (11:00 PM EST, TBS)

Chelsea Lately features Anne Hathaway, promoting the film ``Les Miserables.'' (11:00 PM EST, E!)

The Tonight Show with Jay Leno has Actress Megan Fox; Heisman Trophy Winner Johnny Manziel; Colbie Caillat performs. (11:35 PM EST, NBC)

Late Show with David Letterman features Actor Tom Cruise; MNDR performs. (11:35 PM EST, CBS)

Jimmy Kimmel Live has Actor Hugh Jackman; actress Jenna Fischer; 2 Chainz performs. (12:00 AM EST, ABC)

Late Night with Jimmy Fallon welcomes Actor Ewan McGregor; Ask This Old House; actor Charles Grodin; Dave Matthews Band performs. (12:35 AM EST, NBC)

The Late Late Show with Craig Ferguson features Actress Sarah Chalke; author Anne Rice. (12:35 AM EST, CBS)

Last Call with Carson Daly has Actor/Rapper Common; author Dallas Clayton; Desaparecidos perform. (1:35 AM EST, NBC)