I guess this could qualify as an exploitation flick. I just checked out this movie and I'm floored. What a great gripping film. Martin Sheen and Tony Musante (The Bird with the Crystal Plumage) do an amazing job portraying a couple of punks who terrorize a bunch of people on a subway. You could really see where a film like this would of been an influence on later flicks like Last House on the left and Funny Games. Really good stuff. I don't think there is a DVD out but if you have the chance to catch it, I highly recommend it.