In 2001: A Space Odyssey, I have always found it so out-standing that Stanley Kubrick made one of the best known villains in cinema with just dialogue and certain actions. HAL900 is just a computer that talks softly and seems nice but the question is how Kubrick made such a monstrous villain out of one piece of machinery. Sure you've got Angel Eyes for The Good, The Bad & The Ugly or Heath Ledger from The Dark Knight being famous villains because it's what they did physically that made them famous. HAL900 is just a computer, though I find it astonishing how one can turn a small thing into a famous villain.
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A film is - or should be - more like music than like fiction. It should be a progression of moods and feelings. The theme, what's behind the emotion, the meaning, all that comes later.
Stanley Kubrick