I'm impressed with the explanations and everything... but what really got my panties in a bunch is the visualization technology. That is one of the prime examples I've seen of actually leveraging current web tech to communicate actual content instead of just doing fancy stuff just because. I was initially annoyed by the 3D header movement effect, but the content, graphs, and animations of the actual content made me completely forget that and allowed me to be bewildered by what we can do this day and age on the web. Congrats to the maker!