EncoreAn actual high school alumni class in California returns to stage a production of Sondheim’s “Into the Woods” 20 years after they first did so in the one-hour special “Encore” (ABC, 10 p.m.). This time, though, professional directors and choreographers get involved and they’ve got to get it done in a week. Plus they have to juggle jobs and home life (but at least not homework and sports). Kristen Bell hosts and serves as an encouragement.

Those weird gothic decorations are shown off by Melania in the annual “White House Christmas” (HGTV, 6 p.m.).

It’s Baltimore at Pittsburgh (NBC, 8:20 p.m.) in Sunday Night Football. Earlier games include Dallas at Giants (Fox, 1 p.m.), Washington at Chargers (CBS, 4 p.m.) and Philadelphia at Rams (Fox, 4:25 p.m.).

Claire and Jamie race through Jamaica to save Young Ian on the third season finale of “Outlander” (Starz, 8 p.m.).

“Madame Secretary” (CBS, 10 p.m.) has a holiday party, and somebody is in cahoots with the Russians.

The ninth season starts for “Robot Chicken” (Nickelodeon, 11:30 p.m.).

The full length animated “Frozen” (ABC, 8 p.m.) serves as a holiday special; an Australian production of “Driving Miss Daisy” is on “Great Performances” (PBS, 8 p.m.).

A couple of seasonal favorites play back to back: “National Lampoon’s Christmas Vacation” (Freeform, 6:30 p.m.) and “Elf” (Freeform, 8:40 p.m.).

On yet another new TV romance, “Sharing Christmas” (Hallmark, 8 p.m.), a real estate developer against a Christmas shop holdout. Starring Ellen Hollman and Bobby Campo, the film features a performance by sax man Dave Koz.

And another familiar plot line emerges in “A Christmas Reunion” (Lifetime, 8 p.m.), in which a New York bight inherits her aunts bakery, goes back to her home town and has to co-manage it with her ex-boyfriend. With Denise Richards and Patrick Muldoon.

Death and birth are issues on “Shameless” (Showtime, 9 p.m.).

The trip to San Francisco may be ruined on “The Real Housewives of Atlanta” (Bravo, 8 p.m.).

Sideshow Bob returns to “The Simpsons” (Fox, 8 p.m.).

“Wisdom of the Crowd” (CBS, 8 p.m.) is one of the early cancellations of the season.

Linda wants to have a party at the restaurant on “Bob’s Burgers” (Fox, 8:30 p.m.).

“The Walking Dead” (ABC, 9 p.m.) entwines its storylines for its midseason finale, then “The Talking Dead” (ABC, 10:28 p.m.) tells how happy they are with it, even if it went a half hour long.

On “NCIS: Los Angeles” (CBS, 9 p.m.), a woman wants to kill a Brazilian diplomat.

Javier and Letty find each other again on “Good Behavior” (TNT, 10 p.m.).

“A Christmas Carol” is ripped off again, this time by “Family Guy” (Fox, 9:30 p.m.).

Bridge tries out for the WNBA on “SMILF” (Showtime, 10 p.m.).

On “Search Party” (TBS, 10 p.m.), Dory goes to Keith’s funeral.

The episode for tonight’s “WAGS LA” (E!, 10 p.m.) is “Bachelorette Brawl.”

On “White Famous” (Showtime, 10 p.m.), Floyd gets job offers after a video goes viral.

“Close Encounters of the Third Kind” (TCM, 8 p.m.) is paired with the 1953 “It Came from Outer Space” (10:30 p.m.) followed by the silent “The Cossacks” (midnight) and a couple tales about scientists: “Nine Days of One Year” (2 a.m.) and “Fear” (4 a.m.).

Men’s college basketball includes Tulane vs. Florida State (ESPNU, noon), La Salle at Villanova (Fox Sports 1, 1 p.m.) and Arizona State at Kansas (ESPN, 2 p.m.).

Women’s games include Texas at Tennessee (ESPN2, 3 p.m.).

Hockey has Edmonton at Toronto (NHL, 7 p.m.).

In golf, it’s the final round in the QBE Shootout (Golf, 1 p.m.; NBC, 2 p.m.).

Soccer’s NCAA College Cup final is between Indiana vs. Stanford (ESPN2, 1 p.m.).

Sunday Talk

ABC: Dean Young, campaign strategist for Roy Moore. CBS: U.N. Ambassador Nikki Haley, Sens. Dick Durbin and Susan Collins. NBC: Sens. Bernie Sanders and Tim Scott, Rep. Jim Himes. CNN: Haley, Rep. Adam Schiff, Sen. Richard Shelby. Fox News: Haley, Reps. Barbara Comstock and Debbie Dingell.