Google Glass a product anounced was being headed by google co-founder sergey brin a couple of months ago was demonstrated at Google I/O.
Google Glass are digital glasses that show images and can also take pictures from your point of view.
From what we know they can also join google hangouts with live video streaming
It's a pretty epic video of them skydiving biking and repeling down the convention center with the Glasses. Here's the video
http://www.youtube.com/watch?v=D7TB8b2t3QE&feature=plcp
https://www.youtube.com/watch?v=uh-liQDE3cM&feature=player_embedded
Sadly its only available for developers right now but even then the cost is about 1500 dollars I believe.