Disney's Prep & Landing, 8 p.m., ABC
Wayne, a member of the elite elf team that prepares for Santa's Big Night, is hoping for a promotion when he learns he has to stay where he is and train an overzealous new assistant. Hey, look, even whimsical Christmas characters have to deal with annoying co-workers!
How I Met Your Mother, 8 p.m., CBS
Two awesome things about this episode: Marshall finally makes it to the Farhampton Inn, leaving that awful road trip of his behind. And the always wonderful Andrew Rannells (The Book of Mormon, The New Normal, Girls), above, guest stars.
SEASON FINALE The Voice, 9 p.m., NBC
One of The Voice's best seasons ever comes to an end tonight and crowns a winner. Who's it going to be — teenage belter Jacquie Lee or Jamaican powerhouse Tessanne Chin? Don't worry, both should have successful singing careers regardless of who wins. As for Will Champlin, well, we're surprised he made it past the battle rounds, so he should just be happy to be here.
The iHeartradio Jingle Ball 2013, 8 p.m., CW
If you can't catch Miley Cyrus and Robin Thicke at Tampa's Jingle Ball on Wednesday, watch them in this concert taped last week at Madison Square Garden. They're joined by Pitbull, Enrique Iglesias, Macklemore & Ryan Lewis, Ariana Grande, Jason Derulo, Austin Mahone and more. Taking bets now on how many of these artists we'll still care about next year.
Barbara Walters Presents the 10 Most Fascinating People of 2013, 9:30 p.m., ABC
Walters chats with some of the people who made headlines in 2013 in the final edition of her annual special before she retires. This year's top 10 includes Jennifer Lawrence, Pope Francis, Edward Snowden, Robin Roberts, Prince George and, God help us all, the cast of Duck Dynasty. The identity of No. 1 will be revealed at the end of the show. No offense, Pope Francis, but we think J. Law is the one to beat.
I Love Lucy Christmas Special, 8 p.m., CBS
Flashback holiday episode time! While decorating a Christmas tree, Lucy, Ricky, Fred and Ethel reminisce about how their lives have changed since the birth of Little Ricky. And we reminisce about how much life has changed since this show was on the air. Two words: separate beds.
The Christmas Blessing, 8 p.m., Hallmark
Before he struck it big as Barney Stinson on How I Met Your Mother, Neil Patrick Harris was still channeling his inner Doogie and casting around for gigs, like this 2005 TV movie in which he plays a medical resident who takes a break from work after losing a patient brings back bad memories. Ageless wonder Rob Lowe also appears, which is really all the incentive you need to watch.
Saturday Night Live, 11:30 p.m., NBC
Soon-to-be Tonight Show host Jimmy Fallon returns to host the final SNL of the year and brings along BFF Justin Timberlake as musical guest (though he'll certainly show up in a few sketches). You know how Paul Rudd played that character reduced to a squealing One Direction fan girl a few weeks ago? Yeah, that's what these two do to us.