Elon Musk demonstrates the benefits of an intuitive natural user interface (Leap Motion) for manipulating 3D models of rocket components, the Oculus Rift for stereoscopic 3D visualisation, and 3D printing for rapid prototyping.
In a nutshell? When it works, it really does knock it outta the park. It has, however, a but Sir Mix-a-Lot would be desirous of...
I just pre-ordered the Leap Motion controller from Amazon.