Maybe I'm stating the obvious here but that overload is the intent. Think of it as a performance piece rather than a functional website and it makes sense. It isn't meant to fit the ideals of good design anymore than a deep fried candy bar is supposed to be good nutrition.
First of all I was shocked like the rest of everyone on here! Garish, over the top etc But it's the most original unique website I've seen today! I like it when people try something different. From a design point of view it's all over the place but that's not the purpose of the design. It's meant to shock, get your attention and it certainly does that!!!