I was completely blown away when I watched this short 8 minute TED Talk today on their latest evolution of Microsoft Bing Maps which included an Augmented reality demo.
In the words of Bing Maps' Blaise Aguera y Arcas:
"We see this space, three-dimensional environment as being a canvas on which all sorts of applications can play out. Maps, directions are really just one of them."
Very impressive stuff - can't wait to check it out in more detail. TED video embedded below: