It's very hard to pick a particular scene from some of my favourite films, but here goes:
The opening scene from The Sound of Music when the camera is panning over the stunning scenery of the Alps and then gradually we get closer and closer to the ground and there's Julie Andrews singing. Chokes me up every time.
The closing scene in The Godfather 2 when Al Pacino is standing alone gazing out over the lake with unseeing eyes and we all know he's thinking about Fredo.
The scene in The Godfather when Al Pacino meets Sollazzo and the corrupt police captain in an Italian restaurant, and he knows he has to kill them both.
Another scene in The Godfather 2 - Robert de Niro playing young Vito Corleone on his way to kill the local gangster while outside there's a religious procession going on.
The extended sequence filmed in Waterloo station in The Bourne Ultimatum.
Kind Hearts and Coronets - from a crowded field, I think I'd go for Alec Guinnessplaying one of his eight roles, in drag in a balloon throwing Suffragette leaflets down into the West End while Dennis Price aims his bow and arrow ready to shoot the balloon down. I shot an arrow in the air; she fell to earth in Berkeley Square.
The Maltese Falcon - Sydney Greenstreet and Humphrey Bogart meet for the first time. (Thank you IMDB for having a quotes section.)
- Kasper Gutman: You're a close-mouthed man?
- Sam Spade: Nah, I like to talk.
- Kasper Gutman: Better and better. I distrust a close-mouthed man. He generally picks the wrong time to talk and says the wrong things. Talking's something you can't do judiciously, unless you keep in practice.
- [sits back]
- Kasper Gutman: Now, sir. We'll talk, if you like. I'll tell you right out, I am a man who likes talking to a man who likes to talk.
- Sam Spade: Swell. Will we talk about the black bird?
Withnail and I: the teashop scene.
North by Northwest - the crop spraying scene.
Brief Encounter: all of it.