1) “Abbott Elementary” debut, 9:30 p.m., ABC. A slow year for situation comedies is suddenly brightening. Too terrific ones get advance peeks – “Abbott” tonight and NBC’s “American Auto” next Monday – before getting weekly spots next month. Quinta Brunson (shown here) created this, produces it and stars as an earnest elementary-school teacher. Indeed, all the teachers here try hard, despite meager fundling and a clueless principal. The result manages to be both warm and funny.
2) “The Voice,” 8 p.m., NBC. Now we find out which acts will be in next week’s finals. On Monday, eight of them performed and viewers voted; tonight, we learn the top four, who will advance to the finals. The other four get one more chance to perform; then viewers give one an instant save.
3) “Live in Front of a Studio Audience,” 8-9:30 p.m., ABC. The first two specials had modern actors working with brilliant old “All in the Family” scripts; a fairly good show – “Jeffersons” the first time, “Good Times” the second – followed. But now producer Norman Lear, 99, detours: Here are two lightweight shows, with adults playing kids. Kevin Hart and Damon Wayans are the “Diff’rent Strokes” boys; Jennifer Aniston, Kathryn Hahn, Michelle Union and Allison Tolman play “Facts of Life” girls.
4) “The Flash,” 8 p.m., CW. Imagine a hero finding that everyone suddenly thinks he’s a villain. His wife can’t remember their love (or their marriage), thinks he killed her dad and is marrying his enemy. Also, he’s heard that he’ll cause the end of the world. All of that is happening to Barry, in the fourth part of a five-week tale, blending many heroes and villains. There’s also a lot of talk about love, including a big moment at (possibly) the edge of oblivion. It’s a busy and sometimes interesting hour.
5) “People’s Choice Awards,” 9-11 p.m., NBC and E. After a three-year exodus to cable’s E, this will be shared by two networks. Kenan Thompson hosts; he has a comedy-actor nomination for his work on “Saturday Night Live” … which is also up for favorite TV show. The other TV-show nominees are “This Is Us,” “Grey’s Anatomy,” “The Bachelor,” “Loki,” “WandaVision,” “Cobra Kai”and “Law & Order: Special Victims Unit.” Icon Awards go to Christina Aguilera and Kim Kardashian West.