1) “Big Brother Reindeer Games” start, 8-10 p.m., CBS. For eight hours over the next two weeks, we’ll see past “Big Brother” contestants compete in action games. The nine-person field includes the winners from 2020 to 2022 (Cody Calafiore, Xavier Prather and Taylor Hale), plus the 2016-17winners (Nicole Franzel and Josh Martinez). They’re joined by Danielle Reyes, Cameron Hardin, Frankie Grande and Brittney Haynes.Others (including Jordan Lloyd, shown here, will help with the games.) That continues Tuesday, Thursday and next week.
2) “MasterChef Junior” Christmas special finale, 8-10 p.m., Fox. On Sunday, nine kids (ages 8 to 11) faced kitchen challenges. Now four are left and the field will be trimmed to three in the first hour. Judges include Gordon Ramsay and his daughter Tilly, 22, who is also a TV chef. And the oft-glowering Joe Bastianich will visit, dressed appropriately as Scrooge.
3) “The Voice,” 8-10 p.m., NBC. Last week, Gwen Stefani lost two singers, leaving her with one (Bias); John Legend lost one, leaving him with Lila Forde and Mac Royals. The others have three apiece: Reba McEntire has Jordan Reiner (saved by viewers last week), Jacquie Roar and Ruby Leigh; Neil Horan has Nini Iris, Mara Justice and Huntley. Tonight, they sing and viewers vote; on Tuesday, we’ll learn which five reach the finals.
4) “A Very Barry Christmas,” 10 p.m., NBC. After seeing lots of young folks on “MasterChef” and “The Voice,” we can switch to Barry Manilow, 80. Backed by his 24-piece Las Vegas orchestra, he’ll sing his own hits (he’s had 13 reach No. 1) plus some Christmas classics.
5) ALSO: “The Wizard of Oz” (1939), a great movie for families (or for grownups), is at 8 and 10:15 p.m. on TNT. And there are two Monday-night football games, both at 8:15 p.m. ET; it’s the Packers at the Giants on ABC and Titans at the Dolphins on ESPN and ESPN2. That’s rare, but in two weeks there will be a Christmas Day tripleheader, spread across three networks.