360 degrees?

 

Actually, no, I just tried it and it stops hard at 180 degrees rotation. Linda wins. :(

All this head tracking talk got me thinkin... So just for fun I came up with a method of doing 2 axis head tracking (left, right, up, down) using freely available software. I bet with some config file magic you might be able to implement more than those 2 axes.

 

The video is uploading now, so you guys will have to wait till the AM to see it, but I think it will be a workable solution for some people.