Psycho
Really enjoyed this one and am so glad to have finally seen it. Having had some of the plot points spoiled, all the twists and turns still hit and kept me thoroughly entertained. The narrative shift from Marion to Norman is done so effortlessly and probably one of the coolest aspects of the film for me. It really is just one of those classic films that is so undeniably the “blueprint”. You could list all your favorite thriller/horror movies and probably be able to find some element in each of them that was inspired by Psycho.