What's your all time favorite?
Mine would have to be The Shining. The cinematography in that film is immense... the symmetry, the soundtrack... by far the most discomforting film I've ever seen.
Some of the imagery from the Grudge stuck in my mind for weeks after... and not even the gory bits.
I've just had Paranormal Activity from my LoveFilm account... I'd heard it was really frightening and to be honest, I was a little bit worried about watching it... but it wasn't the slightest bit scary!!! I kept thinking the whole way through "this is gonna be the scary bit... oh wait no... THIS is gonna be the scary bit... " And it never happened! Talk about over-hyped.