Koyaanisqatsi
Not a movie in the conventional sense, more like a work of art. You probably don't realize it, but you have most likely seen large chunks of this movie: images of cars speeding on expressways at night, people crowding to get on an escalator, the moon rising over the city, all sped up. A lot of amazing photography, and it has held up amazingly well (the movie is twenty years old). I have always liked the music of Philip Glass, but others might find him grating. I loved it and find this to be the perfect chill-out experience. The first in a trilogy.