1) “Saturday Night Live,” 11:29 p.m., NBC. Glen Powell hosts, with his career in overdrive. His “Running Man” action film opened Friday in theaters — where he scored with “Twisters” and (shown here) “Anyone But You.” He also has the Hulu comedy series “Chad Powers” and the Netflix drama “Hit Man.” Olivia Dean is tonight’s music guest.
2) More Powell. He’s Jake “Hangman” Seresin in “Top Gun: Mavberick” (2022), at 5:30 and 10:10 p.m. on the Paramount Network — which has the original “Top Gun” (1986) at 3:03 and 8:35. Also, the first “Back to the Future” films are at 3 and 5:30 p.m. on AMC, rerunning at 8 and 10:30.
3) Football. ABC has three straight match-ups of nationally ranked teams. It’s Notre Dame (No. 9) and Pittsburgh (No. 22) at noon ET, Oklahoma (No. 11) and Alabama (No. 4) at 3:30 and Texas (No. 10) and Georgia (No. 5) at 7:30. Also at 7:30, top-ranked Ohio State faces UCLA on NBC.,
4) “I Am Paul Walker” (2018), 8-10 p.m., CW. The son of a model and a Golden Gloves boxing champion, Walker was ideal for action films. He was doing his seventh “Fast and Furious” when he died at 40, after a friend’s speeding car spun out of control. Wal;ker studied marine biology and worked on a shark-research ship for National Geographic. Here’ s a profile.
5) “Watson,” 9 p.m., CBS. This reruns the season-opener, with the return of Sherlock Holmes, who was presumed dead. Also, Mary’s mother, with a fast-moving dementia, has poisoned herself. That follows an “FBI” from last season, with jurors in a high-stakes Mafia case gunned down.