Creepiest movie U ever seen - what is it?

What is the creepiest movie (or the creepiest scene) that you've ever
seen?
But with 'creepiest' I don't mean subtle horror like "The Shining",
excessive violence like "SAW" or documentations, because nothing is
more terrible than the reality. (And I don't mean lousy movies :-)
So rather surreal!
For me it was the child-eater from "Pan's Labyrinth" which surprised
me very much:

http://www.youtube.com/watch?v=jAnDKZKqqb8

What really shock you? Destroys you? (Although you knew that it was
not real :-)

Thank you for answers and sorry for my bad english (when it is bad)!