Wow. I need to go change my underwear now.
It reminds me a lot of those "shock sites" that people send you where they tell you to search a picture carefully to find a ghost hidden in the background, and then it shows a severed terrible picture and completely blasts our your ear drums. Only this feels more terrifying. Executed with a lot more flair.
Pretty convincing use of turning your head while moving, too...I mean, for FMV, that is.