This blog talks about a Japanese experiment to control an SL avatar with a brain-computer interface.
I wonder when I will be able to try this ... Some time ago someone came to my co-worker Daniel and me to offer us some device that would measure the brain waves and stuff. We never had the time to play with it and it was still pricey to get it just for fun.
I'm just so curious about this type of technology, it has a huge potential, and it seems to be happening sooner than we expect.