I agree with "rosepetel" and "sorrowmovie", The Ring is one of the most scary films of the past 15 years or so. I also liked Dog Soldiers, Hostel, You're Next, Wolf Creek, Final Destination and 30 Days of Night. And before all of them, there was Jaws (Happy 40th Anniversary!), The Changeling with the great George C. Scott, Them! and the original The Blob with Steve McQueen. (Those last two scared me silly each time I watched them as a young boy, usually late on Saturday nights or early Sunday mornings.)