Anyway, one of the things that makes some luxury watches so expensive is how many tiny little contraptions (called "complications," for good reason, in horology) are crammed into them. Chronometers, date displays, and the grand-daddy of expensive complications- the tourbillon.
They're more or less little spinning doohickeys, and they are awesome.
Flickr user "martin t w" has a lot of watch photography on his photostream that displays closeup shots of various parts of luxury watches, and they embody nearly everything I love about closeup and macro photography. The minute details and the very abstractness that come from getting up so close to something are simply amazing.
Examples:
http://www.flickr.com/photos/martinwilmsen/4688510362/
http://www.flickr.com/photos/martinwilmsen/3825942705/