What's a joystick?

Meet the next thing in gaming. Like something right out of Brainstorm or Strange Days, the Emotiv controller could be the next great gaming accessory. The idea is that it senses various brainwave activity and translates them into controls for whatever system you're using.

Seems to me that if this works, it opens a door to tons of applications. I would think the military would be all over this particular technology (and probably already is).

I think this could be a very expensive accessory for any system, considering I tend to throw my controllers across the room when the game is kicking my butt...