I saw the Johnny vids about the head tracking, and turns out, there's a Compiz plugin especially for that.
I'm already using the dual pens that Jmitchell sold me, and damn.. They work nice
Well, now I'm looking for a decent set of goggles as Johnny uses. Not to insult the pen makers, but is 20$ a fair price for glasses like that?
I'm trying to get a maker for these up and running, not create fighting on a fair price, so please be nice

That, and holding 2 IR-pens up to my ears makes me look more of a dork.
I do remember seeing clip-on ir tracker by some company that sells a head-tracking setup. I think it was 34.95$ and it was on sale. It used 3 irleds in a vertical position, rather than horiz, but that's quibbling over small stuff.
So, the big question: Can it be done, and what's a fair price?