WORTH NOTING ON TV

FRIDAY Evening at Pops (PBS, 9-10 p.m.): Conductor John Williams marks his 10th anniversary as Pops conductor in the best of all ways: conducting music from his own film scores - a lot of it written for the movies of Steven Spielberg, who appears on film in a tribute to Williams. American Patchwork (PBS, 10-11 p.m.): In `Cajun Country: Don't Drop the Potato,' folklorist Alan Lomax adroitly blends history with lively modern scenes - from fiddlers to mounted lancers spearing rings - in this look at Louisiana's Cajuns, the second in a vibrant and authoritative five-part series about America's folk cultures. MONDAY Adventure (PBS, 8-9 p.m.): Water moccasins, alligators, and oh! those mosquitoes. But Florida's Everglades is a nice to visit - smugglers and all - according to author Peter Matthiessen. In `Lost Man's River' he guides viewers deep into the swamp to sample old memories - some of them from retired `gator-poacher Edgar ``Bloody'' Watson - and present-day wildlife.

TUESDAY P.O.V. (PBS, 10-11:30 p.m.): It's not enough to say college students were radical in the '60s but are career-minded today. In `Letter to the Next Generation,' Joe Klein - this week's filmmaker in the `Point of View' series - finds much more complex and interesting realities when he visits the Kent State University campus, more than 20 years after a tragic student clash with National Guardsmen.

Please check local listings for all programs, especially on PBS.