Second Sight
I love the idea of this sort of thing, but for me, it's still too obtrusive. If I'm looking at a virtual screen while I'm wallking down the street, I don't want people to know it, at least not know it so obviously.
The technology is improving, but it's still not there yet, for me at least – not in a mobile sense.
I would like to try something like this for a desktop PC, or for a laptop in meetings – there, it could be convenient. (just not in public…)
Interactive Imaging Systems[via engadget]