I have so many:
The Graduate: Right at the end where Ben (The graduate) and the girl he loves is getting married to someone else, Ben disrupts the service, and as the people are screaming at him, he takes the cross from the church and jams it into the doors so that they can't follow him and the 'bride'. Then they hop on a passing bus, and have laugh exhausted - then they get this look of "Oh God what have we done" on their faces. Priceless.
The Nutty Professor (the original) where Buddy Love is drinking his potion and his bird, a Raven, says to him, "Think about it Julius, think, think, think about it".
Halloween: when the two teens are in the bedroom and one goes to the kitchen, little does the one left know that Michael Meyers actually comes back into the room under a sheet pretending to be a ghost.
Whatever Happened To Baby Jane: that classic scene where poor Blanche is in the wheelchair and says, "If I weren't in this wheelchair Jane" and Jane (Bette Davis) says, "But ya ARE Blanche, ya ARE in that chair!" Chilling!!
I have so many favorite movies, it's impossible to pick. Most are Hitchcock films and I have favorite scenes from each and every one of them:
Rope: When Jimmy Stewart's character realizes that one of the guys has killed their friend, and the one that had a hand in the act starts playing that tune on the piano over and over and gets drunker and drunker.
Psycho: When Marion Crane decides to turn herself in with the money, and puts the money in the suitcase which she never gets to return because she gets murdered soon afterwards;
Vertigo: When Jimmy Stewart's character tries to remake Judy into Madeline; and when he has a nervous breakdown and his female friend Midge weirdly says to him, "Mother's here" as she's comforting him - What?? She's his ex-fiancee, very strange.
And too many others to list!
