"favourite really bad movie.", haha. OK, I'll go download it then.
The same director made another horror movie in the 80's, about a psycho killing scuba diver who's on the loose in the canals of Amsterdam. Hilariously bad, you couldn't make it up.
http://www.youtube.com/watch?v=UHkqZt1WPHc
It's a shame he didn't get to make an American remake of that one because I'm sure you'd love it!