This one is for all you shutterbugs: the F-Stop Watch from the NeatoShop, where the dials are marked by the diaphragm aperture (or in fancy photography lingo, the F-Stop or F-number).
Perfect for the photographer in the family: Link
See also: More Fun and Unusual Watches from the NeatoShop
I need to buy this though.
FUN FACT: I'm shooting a project in 16 mm tomorrow! Woohoo!