1) “It’s Always Sunny in Philadelphia” season-openers, 9 and 9:32 p.m. today, FX and FXX. Starting its 18th season, this is the longest-running American sitcom ever. That’s due to short seasons (10 episodes this time) and wildly weird stories. Tonight’s first episode — wedding day for Frank (Danny DeVito, second from right in a previous episode) is bizarre and sometimes hilarious; the second is fairly funny.
2) Football, 8 p.m. ET Sunday, Fox. The Super-Bowl-champion Seahawks are everywhere. They’re in “Hard Knocks: Training Camp” (9 p.m. Tuesdays, HBO) and in this pre-season game with the Titans and receiver Carnell Tate, the No. 4 draft pick. The No. 1 pick? That’s quarterback Fernando Mendoza; his Raiders face the Texans at 8 Thursday on ESPN.
3) “The Lion” opener, 9 and 10 p.m. Wednesday, National Geographic. Brilliantly crafted, this is an epic, two-week documentary. Jon Favreau, who directed the non-cartoon “Lion King,” produced it; Hans Zimmer — who won an Oscar for the animated “Lion King” — did the music. For four years, a crew got great footage of a young cub’s rise to power.
4) “The 1% Club” season-finale, 8 p.m. today, Fox. TV’s best game show ends with an odd episode. There’s a devilishly difficult question quite early, dumping a record number of people in one swoop. And there are 100 repeat contestants; one has host Joel McHale’s name tattooed on her arm; another has an extremely different outcome this time.
5) “America’s Got Talent,” 8-10 p.m. Tuesday, NBC. The live shows finally begin. Last week, Mel B and Howie Mandel added four music acts, two comedians and a magician, Now there are 44 acts, including dancing dogs, dancing robots, a knife-thrower and sword-swallower. Each Tuesday, 11 perform and viewers vote; the results are at 8 p.m. Wednesday.
6) “Starring Dick Van Dyke,” 9-11 p.m. Tuesday, PBS. This reruns a joyful profile that debuted Dec. 12 — the eve of Van Dyke’s 100th birthday. We see his early nightclub act, the TV shows that floundered before the great “Dick Van Dyke Show,” the triumph of “Mary Poppins” and some serious roles, one reflecting his own struggle with alcoholism.
7) Leading-man marathons, Tuesday and Thursday, Turner Classic Movies. Tuesday has Robert Redford, including the Oscar-winning “Sting” (1973) at 11 p.m. ET; Thursday is Marlon Brando, with the seething, Oscar-nominated “Streetcar Named Desire” (1951) at 8. Vivien Leigh won an Oscar in that … and in “Gone With the Wind” (1939), at 8 p.m. Wednesday.
8) “Eugene Onegin,” 9 p.m. Friday, PBS. This week is a turning point; PBS wraps its pledge drive and starts adding new shows: “Resolve to Solve” (10 p.m. Wednesday) sees Miles O’Brien find fresh approaches to climate, nature and more. Friday brings this Metropolitan Opera production; a week later is the annual Vienna Philharmonic concert.
9) “The Walking Dead: Dead City,” 9 p.m. Sunday, AMC. It’s always something. Last week saw an earthquake take much of the food; this week ends with a new crisis. It’s well-made, but messy. For gentler fantasy, try “The Ark” (10 p.m. Wednesday, Syfy), “Lanterns” (9 p.m. Sunday, HBO) or “Star Trek: Strange New World” (Thursday, Paramout +).
10) MORE: For the first time in two months, NBC is back to all-“L&O” Thursdays; there are reruns of “Law & Order” at 8 p.m. and “Law & Order: Special Victims Unit” at 9 and 10. And from 8-10 p.m. Saturday, CBS has “The Run For a Million”: Taylor Sheridan (“Yellowstone”) switches to non-fiction, with 16 riders guiding horses through complex courses.