The one that stands out in my mind is Haunts of the Very Rich - it's a cheesy movie about a bunch of people who go to a tropical resort, and then things start going wrong, and nobody can leave. I turns out that all of them had somehow narrowly escaped death just before going there (or had they, really?). I only ever saw it on late night TV a few times.

The point of attraction was Ed Asner shirtless (and it's curious that the IMDB page actually forewarns people about his hairy back. To each his own ;))