I agree on the blood and gore being less effective, even with the realism that is possible with today special effects. The scariest ones to me are movies like The Strangers, and The Last House on the Left. Movies that are believable enough because they COULD actually happen. I'm also a sucker for paranormal movies. Paranormal Activity scared the hell out of me, and I didn't sleep at all that night. My girlfriend and mom aren't bothered by them at all. I tend to over-think things, and after I watch one of those movies, I continue to replay scenes in my mind and scare myself over and over.