6. Halloween
Halloween is a perfect horror movie. John Carpenter basically created a how to guide on how to make an effective and terrifying film. From the opening to the end there is not one scene or moment that's out of place and everything falls together perfectly to create a sense of tension that would make Alfred Hitchcock blush. Hitchcock is also a notable influence on Halloween and John Carpenter honors that influence very well without the film ever feeling like a copy of Psycho or Hitchcock's style. Psycho may have invented the slasher sub-genre but Halloween defined it with Michael Myers and Carpenter's brilliant and voyeuristic direction. His use of foreground composition has never been bettered in a horror film and there is no greater slasher villain that Michael Myers.