1) “China: Nature’s Ancient Kingdom” (shown here) finale, 8 p.m., BBC America. A beautifully filmed, three-week series concludes in four parks in China’s heavily populated East. One exists not far from the 25 million people in Shanghai; another is along the border, where tigers casually stroll between Russia and China. Footage ranges from a thieving chipmunk raiding a cache, to a rare gibbon swinging along treetops. That’s surrounded by other gorgeous nature scenes: “Frozen Planet” reruns are from 1 p.m. to 6 a.m.
2) Sports surge. Three sports collide. Basketball has play-off games all day; that’s 1:30 (Bucks-Heat) and 4 p.m. ET (Nuggets-Trail blazers) on TNT, then 7 (76ers and Wizards) and 9:30 (Jazz-Grizzlies) on ESPN. Baseball has three games at 7:15 p.m. ET on Fox, varying by region. And hockey will be on NBC (Islanders-Bruins, 8 p.m. ET) and NBC Sports Network (Maple Leafs-Canadiens, 7:30).
3) “Magnum P.I.,” 8 p.m., CBS. Magnum is skeptical when some overzealous neighborhood-watch people ask him to investigate a suspicious guy. Then he finds they might be onto something big. That’s one of two scripted reruns tonight; the other is “The Good Doctor” (10 p.m., ABC), with Claire making an incorrect diagnosis, then finding a disconcerting hospital policy.
4) “36 Hours” (1964), 8 p.m. ET, Turner Classic Movies. For TCM, the entire Memorial Day weekend is a military marathon. Today, that ranges from the light (Andy Griffith in the 1958 “No Time For Sergeants,” at 11:30 a.m. ET) to this intriguing oddity: Germans set up an elaborate ruse, to make a GI (James Garner) think he’s in an American hospital, post-D-Day, and can chat about the invasion plan.
5) “Oslo,” 8 p.m., HBO. This should have been an upbeat film to watch – the drama that led to the historic peace agreement between Israelis and Palestinians, in 1993 Oslo. We’re seeing it, however, at a time when that region has been shattered by war yet again. Andrew Scott and Ruth Wilson star.