That is one crazy visual. At first I thought the tower looked way too tall, especially since a 6x6 stack of barrels would be 36 barrels per height, but since they were wrapped around that tower, it was only 20 per stack. Made the tower a lot taller than it could have been for sure. Still very impressive though.
That music in the video was "Treadstone Assassins" from Bourne Identity.http://www.youtube.com/watch?v=hYaso7QeXqU
You can find a lot of cool music if you look for film scores instead of soundtrack music (score music is the stuff that's just instrumental.)