Hardknock

I saw something on the discovery channel a while back about an unlimited power supply. People build these machines and they're supposed to supply power forever by some metal balls spinning in circles and the machine tilts back and forth generating power. I forget the name of the theory but it's never been developed. Some say the reason why is that it'll throw the world for a loop if we don't have to use oil anymore and the governments of the world supress it.

I still can't remember the theory though.....