The Lego Great Ball Contraption - 2012 Edition

With 600 hours to spare, one man set out to create a mindblowing feat of Lego engineering: The Great Ball contraption. I've seen a variety of these on Youtube in the past, but nothing as elaborate as the device that user Akiyuki assembled. The point of these GBC's is to create a device which moves balls on a self sustaining cyclical course, via a menagerie of engineered sorting devices, using Lego Technics/Mindstorms components. I can't even imagine how much this cost to put together, but it sure is a mesmerizing watch for anyone with an appreciation for everyone's favorite colored bricks.