1) “Saturday Night Live,” 11:29 p.m., NBC. Here are opposites in many ways: Ariana Grande, who hosts, is 32; Cher (shown here), the music guest, is 79. Grande has a gentle voice and presence; Cher us a booming alto with a towering persona. But both are talented stars; Cher’s only other time as music guest was in 1987 … six years before Grande was born.
2) Football. The first playoff round continues. It began Friday with Alabama and Oklahoma; today, ABC has Miami-Texas at noon ET; TNT has Tulane-Mississippi at 3:30 p.m. and James Madison-Oregon at 7:30. The first-round winners will face the four top-seeded teams, Dec. 31 and Jan. 1.
3) “Another Sweet Christmas,” 8-10 p.m. ET, Great American Family. Two Christmas favorites, Candace Cameron Bure and Cameron Mathison, return. In last year’s “Home Sweet Christmas,” their characters met and fell in love. Now they’re making a movie about it, while planning their own wedding. The film is inconsistent, but has funny moments and a sharp finish.
4) “A Pickleball Christmas,” 8-10 p.m., Lifetime. In real life, James Lafferty was a high school basketball star who then played one on TV (in “One Tree Hill”). Now he’s an athlete again — a tennis star, trying to rescue the pickleball club that his parents savor.
5) ALSO: TNT has a great stretch early: The “Grinch” cartoon is at 10 a.m. ET, “A Christmas Story” (1983) at 10:30 and Rob Reiner’s “The Bucket List” (2007) at 12:30. At 8 p.m., there’s CBS’ “Family Film and TV Awards” (originally set for last week) and CW’s “Ordinary Girl in a Tiara.”