The Bat People (1974)

Directed by Jerry Jameson

This actually has the distinct dishonor of being in the Bottom-100 rated films on IMDB. While yes, it is a bad movie, I wouldn't actually say it's that bad.  Unlike many well known perfectly awful sci-fi and horror movies, there is actually a somewhat coherent plot here, and it does contain some scenes that are genuinely entertaining.  I mean, it has a car chase.  And it's actually a pretty good car chase.  There are of course many unintentionally ridiculous and hilarious moments, but it remains fairly watchable throughout the whole movie.