This lowest-common-denominator remake of a minor slasher classic succeeds on purely technical terms — it’s the first R-rated movie to be made in digital 3D! — but, despite the depth effects, it’s a serious snooze. Horror aficionados and completists should definitely see this in a 3D theater, because the quality of current 3D DVDs and Blu-ray Discs leaves a lot to be desired (we’re talking red-and-blue glasses, folks), and nobody should sit through a flat version of this.