Psycho. My father took me to see it when I was ten. I was scarred for life. What was he thinking? The shower scene gets a lot of play, but the one that scared me most was when the guy got stabbed at the top of the stairs.

Here's a bit of family history that gets retold from time to time. We went to to see a movie and my 4 year old sister was so scared that she hid under the seat. It was Bambi.