Not sure if people have seen this before but I thought I would post a link to it anyway as it looks to be rather good!
Its a fully 3D controller using a position and orientation tracking system that seems to put the Wii remote to shame.
The controller should give a greatly higher degree of interactivity and the gestural controls that would be possible using sixense are quite exciting!
If it takes off it could be used in many aspects of gaming and interactive music.
I don't reckon much to the sounds on the tech demos though lol!