Hitchcock blamed Jimmy Stewart for the film's poor showing at its release. He thought he was too old to be believable as Kim Novak's love interest, and replaced him with Cary Grant for his next film, North by Northwest. (Source)

The famously disorienting "dolly zoom" camera shot was inspired by a time that Hitchcock fainted at a party. Leave it to Hitch to remember what it looked like on the way down. (Source)

Matthew Weiner, creator of Mad Men, is a huge fan of the film. Check out those opening titles with the falling man and the giant eyes. (Source)

Hitchcock, not someone you'd call publicity-shy, gave himself a brief cameo in each one of his films. In Vertigo, he's seen about ten minutes in, walking past Gavin Elster's shipyard, wearing a suit and carrying a horn or trumpet case. Essay topic: why a trumpet case? Beats us. (Source)