1) “Perfect Harmony,” 8:30 p.m., NBC. These people are determined to win the next choir contest. They’ll practice relentlessly; nothing will get in the way … except, of course, deer season (shown here). In this Kentucky town, everything stops for hunting. Arthur, the crabby choirmaster, reluctantly joins the hunt. Tempers fray, friends fight; it’s another funny episode of the best new show on broadcast TV.
2) “Mom” (CBS) or “The Good Place” (NBC), 9 p.m. The universe has conspired to put two of TV’s best comedies at the same time. “Mom” is a traditional one, with studio audience and sharp punchlines; now Christy guides Rudy (the mean-spirited chef) to court-ordered AA meetings. “Good Place” is thoroughly untraditional, with huge sight gags and wild (and hilarious) plot twists. This may be the first time you’ve heard someone ask: “Are you really Michael, or are you Vicki in a Michael suit?”
3) “Grey’s Anatomy,” 8 p.m., ABC. “Station 19” is on the shelf until mid-season, but two characters show up here: Ben and Vic (Jason George and Barrett Doss) bring a young woman to the hospital. Meanwhile, Meredith brings bad attention to her former colleagues, then tries to fix things.
4) “Legacies,” 9 p.m., CW. Last week’s opener saw Hope plunge into a black pit to save her friends. She got out, but now no one knows her. As this lonely life begins, the school has changed. Alaric is teaching at the public school, the one with non-magical students. The new headmaster for magic kids is Vardemus, played by Alexis Denisoff, who was Wesley in “Angel” and Beckndorf in “Grimm.”
5) “Doc Martin,” any time, www.acorn.tv. A character from the first two seasons booms back to town, providing a contrast to this low-key, low-volume episode. Crises range from minor (the dog is missing) to major: The future of the pub is in limbo, with a late-in-the-episode jolt.