Insane Dude Runs Across Top of Skyscraper [VIDEO]

I have never seen anything like this in my life! This guy decided to stand on the edge of a skyscraper, and then video himself running along the edge.

First of all, it takes a lot of kahuna's for me to even get up anywhere that high up in the air without any kind of security that I wouldn't fall off. But to be up there, take a camera, then run, and jump from spot to spot is just NUTS. I have bungee jumped, but that is the extent of my height seeking adventures. How high off the ground would you go?

 [YouTube]