Who all watched the livestream? I liked what I saw, sure they had some hiccups but it's nice to see it all coming together. I liked seeing the new mobiglass in action and didn't expect the facial tracking software which was pretty cool.
Other than for gesturing, can someone explain to me the purpose of head tracking? Unless you are wearing VR gear, or otherwise have a screen attached to your head that moves with you, what good does it do if the perspective moves with your head?