What’s On TV Tonight? – 12/18/2012

8:00 PM EST

NCIS (“You Better Watch Out”) – Tony’s father (Robert Wagner) visits for Christmas; as the team tackles a murder investigation, Abby can’t contain her excitement over holiday festivities. (CBS)

A Charlie Brown Christmas – Charlie Brown and Linus search for the meaning of Christmas; the short “Prep & Landing: Operation Secret Santa” accompanies the holiday classic. (ABC)

9:00 PM EST

NICK’S PICK: The Voice (“Live Finale”) [SEASON FINALE] – Carson Daly announces the winner; performances from Rihanna, Kelly Clarkson, Bruno Mars and The Killers. (NBC)

Rizzoli & Isles (“Over/Under”) – A former college football player is stabbed during a fundraiser; Frost’s mother visits Boston. (TNT)

Happy Endings (“No-Ho-Ho”) – When Jane’s friends learn that her birthday is on Christmas Day, they try to throw her a party that isn’t overshadowed by the holiday. (ABC)

NCIS: Los Angeles (“Free Ride”) – Sam, Callen, Deeks and Kensi spend Christmas on an aircraft carrier investigating an NCIS special agent’s death; Eric and Nell celebrate the holidays at headquarters; Hetty goes on a trip. (CBS)

9:30 PM EST

Don’t Trust the B—- in Apartment 23 (“A Weekend in the Hamptons…”) – Chloe tries to cheer her friends up by dragging them to the Hamptons, where she tries to crash the party of the year and hook up with its host. (ABC)

10:00 PM EST

Private Practice (“Georgia on My Mind”) – Charlotte continues to run the hospital from her bed; Mason starts acting out in school. (ABC)

Vegas (“Estinto”) – After a series of robberies, Sheriff Lamb gives Dixon an undercover job at the Savoy; Jack and Ralph suspect the mob when the biggest contractor in Las Vegas is murdered. (CBS)

Leverage (“The Toy Job”) – The team creates a global toy craze to take on a CEO who is about to release a dangerous toy onto the market. (TNT)

LATE NIGHT

Chelsea Lately welcomes Drew Barrymore. (11:00 PM EST, E!)

Conan features Chris Pratt; Anna Torv; Jose James. (11:00 PM EST, TBS)

The Tonight Show with Jay Leno has Director Quentin Tarantino; singer LeAnn Rimes. (11:35 PM EST, NBC)

Late Show with David Letterman features Actor Paul Rudd; Alicia Keys performs. (11:35 PM EST, CBS)

Jimmy Kimmel Live has Actor Samuel L. Jackson; “Jersey Shore” cast Nicole “Snooki” Polizzi, Jenni “JWoww” Farley, Pauly D, Sammi “Sweetheart” Giancola, Ronnie Ortiz-Magro, Mike “The Situation” Sorrentino and Deena Nicole Cortese; Ed Sheeran performs. (12:00 AM EST, ABC)

Late Night with Jimmy Fallon welcomes Actor Tom Cruise; director Judd Apatow; Trans-Siberian Orchestra performs. (12:35 AM EST, NBC)

The Late Late Show with Craig Ferguson welcomes Actor Don Johnson; reality-TV personality Brad Goreski. (12:35 AM EST, CBS)

Last Call with Carson Daly features Comics Randy and Jason Sklar; photographer Zak Waters; Brandi Carlile performs. (1:35 AM EST, NBC)