I really like this movie. It's ridiculous when you think about it, but it's really creepy when you watch it. Giving the monsters a somewhat human face actually makes them weirder. I hope they never remake this one with lame cg monsters.
I had this one up about three years ago, but it's gone, like so many others. So here's a new one, with a cool intro by Roger Corman himself. I don't know if this is available on DVD again, there was one made a while ago, but I don't know how legit that was.