1) “Magical Musical Celebration,” 8-10 p.m., ABC. Now ABC seizes the holiday. It debuts “Mickey Saves Christmas” (simulcast on Disney cable channels) at 7, reruns “Olaf’s Frozen Adventure” at 7:30, then has two hours in Disney parks. There’s music from Derek Hough (shown here) and his sister Julianne Hough, who are the hosts, pluys Maren Morris, Ne-Yo, Meghan Trainor, Becky G, Jordin Sparks, Il Volo, Chloe Flower, Black Eyed Peas, Run DMC and David Foster and Katharine McPhee.
2) “A Holiday Spectacular,” 8-10 p.m., Hallmark. An adequate story is injected with lots of period-piece spectacle and high-kicking moves. A former dancer (played by Ann-Margret) recalls when she broke away from her high-society life to audition for the Rockettes. Ginna Claiore Mason (who starred in Broadway’s “Wicked”) plays her in the richly filmed flashbacks that dominate the film.
3) More Christmas. At 8 p.m., Lifetime has “A Christmas Spark,” an OK romance with Jane Seymour and her “Dr. Quinn” mate, Joe Lando. That’s surrounded by the fairly good “Santa Bootcamp” at 6 and Mario Lopez’s excellent “Steppin’ Into the Holiday” at 10:03. Also, TNT runs “Christmas Vacation” all day – 6 a.m., 8 a.m., etc. And the Disney Channel follows “Mickey Saves Christmas” with cartoons of “Toy Story” (7:30) and “Prep & Landing” (8 and 8:30).
4) Non-holiday: Yes, there are some regular episodes tonight. Fox inserts “Welcome to Flatch” (with a tornado episode) at 8, nudging “The Simpsons” (a future Lisa/Nelson romance) at 8:30. And this is a last chance to catch all three CBS dramas – “Equalizer,” “East New York” and “NCIS: Los Angeles” – before movies borrow two hours on Sundays in December.
5) “Don’t Worry Darling” (2022), 6:50 p.m., HBO, and “Booksmart” (2019), 9:30 and 11:45 p.m., E. We can survey the start of actress Olivia Wilde’s career as a gifted movie director. “Booksmart” is a terrific indie film about brainy girls (Beanie Feldstein and Kaitlyn Deaver) trying to wedge everything they missed into a final high school day. Critics raved about it, but had mixed feelings about the bigger-budget “Darling,” with Florence Pugh and Harry Styles.