Since LuLu has you folks reminiscing about movies and books and what-not, I'm going to break with tradition and ask for your single favourite movie scene of all time. It can be an extended scene, but it should focus on a single event of some kind and you have to sum it up in a single sentence of dialogue.
And to start things off, here's mine (paraphrased from memory, and from the original, not the remake):
"Oh, no, you misunderstand ... we build only model airplanes."
AND IN SECOND PLACE, I'm thinking, "You keep using that word 'inconceivable' ... I do not think it means what you think it means."