I almost met Michelle Pfeiffer on a beach as well, but it was on the other coast. When I was a kid there was a rumor that she was visiting the beach we were vacationing at because her husband (boyfriend?) was shooting a movie nearby. My cousin and I snuck over to the house they were supposedly staying at which was just across the street from us and 2 houses down and saw a car with the movie title (Super Mario Bros.) parking pass on the windshield. We went up to the house and knocked and asked if Michelle Pfeiffer was there and the guy who answered the door said we had the wrong house. We did see a blonde lady come out on the porch a couple of times that week, and even saw her walking to the beach one time but by the time we got our shoes on and told an adult we were going, we lost sight of her. It’s entirely possible it was never her to begin with, but at the time we just knew it was her and we were gonna meet her.
Also, that same week we ended up walking up on them filming an episode of Matlock, so I guess my answer for the thread is probably Andy Griffith.