I will never forget how much the original Texas Chain Saw Massacre disturbed me the first time I ever watched it. Still every bit as intense today, it gets my vote. Lisa and the Devil, Vampyres, and The Living Dead at Manchester Morgue (a.k.a. Let Sleeping Corpses Lie) would be my runner up choices. I want to see Bad Ronald. Doesn't look like this one's headed to dvd anytime soon.