As well as the very underrated remake in 1978:
Both are really creepy, and it's fun to contrast 1950's small town America paranoia to 1970's big city isolationism and existentialism.
Father. Husband. Son. Brother. Kid from the East San Fernando Valley becomes comic book creator, novelist, concept artist, storyboard artist, instructor, worshiper of classic Spielberg and Lucas, fanatic of all things dinosauria, Los Angeles sports teams fan, enjoyer of tacos up and down the West Coast, Kurosawa and Hitchcock sycophant, driver of fast European cars, inherent resister of authority, and graduate of Art Center College of Design.