Ah, this one's easy. I remember a couple of years ago renting a movie purely based on its title and premise: the movie concerned vampire dwarves who attack a small town somewhere in the mid-west. The title of the movie? Ankle Biters. Unfortunately, it's the only remotely interesting/worthwhile/entertaining thing about the movie, when quickly degenerates into the director's buddies parading around in their jeeps carrying scary looking automatic rifles and fake shooting small people with fake teeth. It's so bad, I'd easily rate it lower than most of the MST3K canon. I loved it. I now own Ankle Biters, where it takes pride of place alongside Chupacabra Terror, Sci-Fighters, Cyber Cop 2, and my Ed Wood box set.