McConaughy's acting is great, he outdoes the script.
@Hesky, it's pretty similar to Inception. Cool for a popcorn movie, but the writing is contrived a lot of the time. I think there could be complaints about it being esoteric, but conversely, at parts its dumbed down because Nolan lacks faith in his audience and falls back on his major problem of blatant exposition and conventional (also badly executed) storytelling.
The visuals are fantastic though.