Building Prototypes: a must watch series

Dan Gelbart is a rich Canadian guy who made his millions building machines for other companies. Now he has a money-is-no-object shop to mess around in. I particularly like the video going over his lathe/grinder combo that he designed and built. The spindles and ways are on air bearings and it's incredibly precise. Also check out his video on flexures where he shows off a simple water jet part that allows 25x resolution for you measurements or positioning.