When I first used google sky map, and layar, you could see my jaw dropping.

But, if this concept evolves and we will have normal size goggles for augmenting the reality, you will hear it dropping (as it hits the floor) :)
http://gizmodo.com/5470535/transcend-ski-goggles-feature-cyborg-hud

P.S. Next step – implant, and modify the vision directly.