I've always been quite taken with the Junghans (sp?) watches I've seen in German department stores.
Quartz movement, but constantly updated and adjusted by the radio signal from Rugby (I imagine!) same as the radio controlled clocks.
Looks an interesting technology in any case, although I wonder how good the battery life would be if the movement is periodically 'listening' for updates?
I have a radio controlled clock at home and it gets through a AA every few months to a year.