Rich Juzwiak of fourfour.com has compiled all the famous bathroom-mirror-shock scenes into one YouTube clip. He misses, of course, the seminal grandaddy of mirror-scare scenes from Roman Polanski‘s Repulsion (1965) — i.e., the moment when Catherine Denueve closes her bedroom closet door and the mirror catches a guy standing behind her.
The Repulsion moment happens around 1.35.
I guess Juzwiak didn’t use it because…what, it didn’t take place in a bathroom? The man is handicapped. His montage is a perfect distillation of the myopic mentality of film nerds for whom the term “older film” is something made in the early ’80s.