Teeth is one of these very few films where I actively had that 'crotch-grab-flinch' reflex when I watched it. My groin is having phantom pains right now thinking about it :(
Unfortunately I aint seen many of those low budget films knocking about recently. You don't really get that many video stores in England anymore. The only place you're likely to find those films is the bargain bin in a supermarket.
