Psycho:

This genre defining horror-cum-suspense movie of 1960, directed by Alfred Hitchcock, has won acclaims as one of the most effective in its class. Practically all the scenes have become legends cinematically, and have gone on to spawn several remakes and sequels, none of which have managed to come anywhere close to the original. The movie is about the encounter between Marion Crane, played by Janet Leigh, a secretary who goes to hide at a motel after stealing from her employer, and the lonely owner of the motel, Norman Bates, played brilliantly by Anthony Perkins. Can one talk about Psycho and not mention the shower scene? It still sends shivers down my spine! It has been studied closely and has aroused endless debates about why it inspires such terror and how it was made.