It defies attempts to categorize it. It destroys your preconceptions of what a "special" movie might be. There's slapstick and there's nonsense and there's meta babbling, except its wordless meta babbling. Also there's angel penises, like a lot of them. Seriously, this movie weirded me out.
In itself the story moves in a pretty straight line. Well, two straight lines. There's the wrestler plot, and there's the white room plot. The wrestler plot is utterly forgettable and, frankly, quite boring. It just functions as the opposite of the white room. One of many incarnations of what opposite could mean in this case.
The white room plot centers on a man trying to get out of the white room. Simple right? Pressing the angels penises (You heard me!) reveals certain, seemingly random, objects. In combination they might lead to an escape. Here the movie really shines. Through sometimes silly, sometimes clever trial and error means the protagonist starts coming up with an escape plan. I found myself thinking along with him (and normally being way ahead of him and getting frustrated with him... JUST USE THE POT!!!).
In the end the two story lines meet to give the audience a bigger picture. The ending still came as a surprise, although, in hindsight, it makes complete sense. It leaves only one question, but I came up with an answer immediately. I think thats how its supposed to be. Not everyones answer will be the same, but there will be one. Perfect example of closure without closure.
Watch this if you like to see special things, don't finish watching it if you're bored after the first white room scene. It probably won't be the movie for you.
I subtracted one star because the effects in the final scene were so crappy that they really distracted me from fully enjoying the ending but that's probably just me and other people working in that field themselves. Nothing to cry over really.