How to control a machine with your brain
newyorker.com
newyorker.com
EDIT: Regarding posture, that's the other exciting thought. Today, using a computer for work or otherwise requires sitting still, usually for long periods of time. Sedentary lifestyles are common and tend to wreak havoc in long-term health. It would be so cool to be able to work efficiently while doing other things. I could program while taking a jog or shopping at the supermarket. It's just a lot healthier.