A few months ago, A friend and I watched the great Spanish horror movie [Rec] in his dorm room. The clever use of found footage, combined with the increasing claustrophobia and whammy of an ending, resulted in both us being quite shaky when it finished. He felt fine, but since I lived across campus, I was really nervous about taking that 10 minute journey alone.
Look at this! Wouldn't you be terrified as well? Source
However, my nervousness was unjustified, because if there was anything that could relieve one of the confining terrors seen on screen, it was a nice cool walk in the outdoors; I got home fine and ended up sleeping without a problem. So who ended up staying awake until 3 am? That's right, my buddy, who freaked out his roommate by remaining wide awake at that late hour, peeking out from under the covers.