(TED stands for Technology, Entertainment and Design. It's a nonprofit that gives people who are working on ingenius projects a platform from which to discuss them; no matter what subject. The website showcases an amazing collection of brief videos, searchable by 'jaw-dropping'-ness, 'inspiring'-ness, etc.)
I came upon this video, from July 2010. It's a headset that allows for hands-free manipulation of technology. It actually reads brainwaves.
Tan Le presents the headset on TED in this video.
You set it up by thinking of what you want to happen while the sensors read and record the activity of your brain. Thereafter whenever you think about that action and your brain reacts accordingly, the system recognizes it and performs the related function.
All I can think about at the moment is how much easier 3D modeling would be ...