I'm sure some of you have stumbled across Johnny Lee's stereoscopic head tracking videos using the Wii Remote.
http://www.youtube.com/watch?v=Jd3-eiid-Uw&feature=player_detailpage#t=164s
Basically it's like the opposite of what Freetrack does. Instead of moving the virtual camera in the same direction as the head. It is turning head translation and zoom into opposite camera rotation to give the effect that you are looking through a window. Pretty neat and wouldn't be hard to implement as a toggle mode on Freetrack I think. Currently, I don't believe it's possible to set up using the profile settings.