There aren't many watches out there that can draw a crowd, but Geoffrey Cooper's "Geocentric" has that potential. The passage of time is represented much like the Earth revolving around the sun.

The rings, which are in constant motion, revolve around the face of the watch to display both the hour an the minutes. So far as I can tell, Geocentric is still in the design/prototype phase, but I think it has what it takes to be a great product. [Geoffrey Cooper via The Design Blog]