1) “Saturday Night Live,” 11:29 p.m., NBC. After a three-week break, “SNL” is back with a string of three new episodes. Tonight, Finn Wolfhard (shown here) becomes the fourth “Stranger Things” star to hosts; the music guest is A$AP Rocky. Coming up as hosts are Teyana Taylor and Alexander Skarsgard.
2) Football. The second round of the play-offs begin, with the Bills and Broncos at 4:30 p.m. ET on CBS and the 49ers and Seahawks at 8 on Fox. Sunday adds Texans-Patriots and Rams-Bears; this weekend’s winners collide a week later, for spots in the Super Bowl.
3) “TV We Love,” 8 and 9 p.m., CW. These reruns focus on “The Love Boat” and “Dynasty.” We definitely watched both shows: “Love Boat” was in the Nielsen’s annual top-20 six times, peaking at No. 5 and No. 9; “Dynasty” was there five times, peaking at 1, 3 and 5. But did we love them?
4) “9-1-1: Nashville,” 8-11 p.m., ABC. The first rerun is from November, with a search for the identity of an unconscious girl. Then come the two most recent episodes: As hackers demand a ransom, hospitalizations and panic mount and there’s a black-out.
5) Movies. Sundance has two gems from director Rob Reiner — “When Harry Met Sally (1989) at 5 and 10 p.m., and “A Few Good Men” (1992) at 7 and midnight. “Freeform” has the “Frozen” films at 7:30 and 9:55. New films at 8 p.m. are cheery (Hallmark’s”Love on the Amazon”) and not (Lifetime’s true-crime-victim tale, “I Am Mary Jo Buttafuco.”