Eastmancolor
I realize it's not everyone's cup of tea, but I really love the surreal quality it gives the film.
Ironjade, in the "3D" post, wonders if it was filmed that way, due to vases, etc. arranged so that they pop up and out at the viewer. It's an interesting question, certainly, but as I believe the film was made on a modest budget and that perhaps it was the quality of the Eastmancolor itself (and the lighting setups needed) that gave that quality of depth.