I'll bet you'll want this. I know I do.
The Midair 30cm site has a download link, which might just be the code to create your own Augmented Reality & Wii controller Google Map - just don't blame me if it isn't!
Other Wii & Google Maps goodness
Wii Jogging with Street View - Wii jogging game using Street View
MapWii.com - a Google Maps mashup of worldwide Nintendo Wii numbers (a identifier unique to each Wii system).