AOS. I watched AOS at a filmfestival in the 1980's, in my late teens or early twenties. It was shown on a big theatre screen, and the volume was turned up very loud. I was shocked, and when I got finally got out of there, it was in a cold sweat and the ground seemed unstable under my feet. It felt like a fever dream.
http://www.youtube.com/watch?v=np8gx0gd9E8
The Midnight Parasites.
http://www.youtube.com/watch?v=mKdcQK2v3JQ