Before it was a hit tv show, 'Buffy the Vampire Slayer' was a campy vampire movie that I watched five million times on VHS. I was seriously obsessed with this movie, which for better or for worse, may have affected by future movie tastes. It's seriously worth a watch whether you liked the tv show or not, though Sarah Michelle Gellar is switched out for the equally talented Kristy Swanson.
Watch carefully during the basketball scene. You'll notice Batman playing some ball with a player who is very obviously a vampire. This is pre-'Good Will Hunting,' but luckily he didn't take any screenwriting notes from this movie or we might have got 'Good Vampire Hunting.' Two things wrong with that joke. 1) the character's name is Will Hunting. 2) it's really bad.