in Psycho, its the first film to kill off its only main character in the first half
the Birds used a terror that was in our everyday life, what Jaws did to the beach, he did to Everyday life in the 60s
Rear Window was all one set, it was one of the largest costom set at the time. the camera angles for all the windows being looked into by the audience were all from the perspective of james stewart, great camera work
Rope was a 2 hour movie that took place over the course of 2 hours, how often do you see a movie with NO TIME LAPSE
He invented things to like special cameras (shower scene in pyscho), directing technics (Rear Window) and almost invented the modern day Suspence Triller Genre