I really like Cloud Atlas too. The new Bladerunner is high on my list. Sunshine, also. Moon.
There's this peculiar film I have watched a number of times. that I think is free to watch on YouTube. It's all dialogue. I believe it was written basically as a play, which interests me because I'm trying to be a writer. It's called The Man From Earth. It's a story about a professor who's trying to leave town without telling his colleagues and friends. (This isn't really a spoiler because it would be in any description). They catch wind and waylay him at his house before he leaves. After some pressure, he reveals that he is a 15,000 or 50,000 year old (I can't remember) Cro-magnon. Then they talk about it.