A very impressive story on 60 Minutes on the real-world application of brain-controlled interfaces that allow disabled individuals (and potentially, everyone) to control software and hardware interfaces.
"Once in a while, we run across a science story that is hard to believe until you see it. That's how we felt about this story when we first saw human beings operating computers, writing e-mails, and driving wheelchairs with nothing but their thoughts."
See embedded video above and link to story transcript.
And for more information on the general topic, read my review of the book Neuroergonomics.