Bing Maps is making some really incredible advances with augmented reality. Check out this video by Blaise Aguera y Arcas at TED Talks.
(Thanks to Niall Martin of Compu b in Cork City for sending the link)
Before you check out this next video on "Photosynth" make sure you have newspapers spread out around the room to clean up after your mind explodes...
Some people question the usefulness of this technology.. That fact is even more mind-boggling.. This technology could make Google Earth modelling easier by allowing photos to be synthesised... Some lessons there for Google... ;)