Nintendo Wii video game console is I believe a little revolution in the game industrie.
It is also a new powerful tool in the hands of Pro'Ams and I'm amazed by the number of people who are now tinkering with it.
I think this affordable input device will trigger lots of original and unexpected usages ranging from cheap virtual reality applications, sports coaches, kinaesthetic arts, etc ...
A first example with Google earth :
A selection of technical links