Earthmine, the next generation map built on Papervision 3D and Flash
This is some crazy awesome stuff, it's a Google Street View on steroids. They turn the world into a virtual reality 3D game, and make it possible to collect all kinds of data in the map... this is truely next-gen stuff. And guess what, it's made in flash and Papervision 3D. Papervision 3D is a set of 3D libraries for flash written in AS3.
Check out the video: