1) “Christmas at the Opry,” 8-10 p.m., NBC. Here are country stars of all sizes, from 4-foot-9 Brenda Lee to 6-foot-6 Trace Adkins. Lee recorded “Rockin’ Around the Christmas Tree” (shown here) 65 years ago; she was 13 then and followed with a dozen top-10 hits, led by the No. 1 “I’m Sorry.” Also performing: Wynonna Judd (who hosts), Kelly Clarkson, Chris Janson, Mickey Guyton, Adam Doleac, Lauren Alaina, Mitchell Tenpenny, Meghan Patrick and Breland.
2) “Bachelor in Paradise,” 8-11 p.m., ABC. Expanding to three hours for the finale, this show is promising something that “Bachelor” and “Bachelorette” rarely manage – an actual wedding. In the early weeks of this season, the show brought in 30 singles and sent more than half of them home. That left 14 people, ages 24 to 33.
3) Comedies, CBS. As “Young Sheldon” fans wait for the final season to begin (Feb. 16), they find frustration. Last week, CBS reran one of the best episodes, with Mandy finally agreeing to marry Georgie; now the show is replaced by “Price is Right at Night” today and “Reindeer Games” next week. CBS does have the British “Ghosts” today, at 9 (a paranormal photo of the house circulates) and 9:30 (a hurried clean-up, after a party).
4) “Lego Masters,” 9 p.m., Fox. A week before its season-finale, the show pauses to have host Will Arnett show the top 100 moments from the four editions. That follows “Hell’s Kitchen,” which has trimmed its 18-person field in half. Tonight has Olympians and a gymnastics theme.
5) “Archie,” Britbox. It’s a busy time for this streaming service. Last week, a terrific “Shetland” season began; next week brings the Christmas episode of some drama series. Tonight is this four-part portrayal of the life of Cary Grant. He grew up as Archie Leach, with parents (a seamstress and a tailor’s presser) who suffered from depression and alcoholism, respectively. From there, he transformed himself into the Hollywood image of elegant sophistication.