Buffy the Vampire Slayer (1992)

No, not the television series of which I may have seen the very odd episode, but the original movie on which the series was based, written by Joss Weedon and presumably the start of his current cult-god status.  Now this is hardly a great film, but approached from the right perspective, it is a good deal of fun.  Buffy is played by the slightly chubby and very athletic (or she had a good stunt double) Kristy Swanson who was probably considered too old by the time the series rolled 'round; she is still making films but not the sort that you would write home about.  As you all probably now know, she was the hereditary vampire hunter of her generation as advised by her mentor, Donald Sutherland.  Her main nemesis is the big chief of the undead, played by the ever-watchable Rutger Hauer beginning his downward spiral but amusingly fey here. And another part of the movie's appeal is seeing actors in small parts who have become subsequently better known, for example two-time best actress winner Hilary Swank playing a teenaged ditz.  Great stuff!