I want a camera with built in GPS. When I take photos, it should tag them with lat/long. For one thing it would make finding photos easier (and very fun). Then when combined with some kind of internet wide search, you could pull up tons of pictures of any place on the world.
Maybe I could hack this together for myself by carrying a GPS. Then later taking the record of where a I was at what time, and by using the photo’s capture time, get a location for each photo.