The Lightmare LED watch looked pretty rad, until I tried figuring out what time was displayed on the picture. The watch lights up a single red LED on the inner ring to mark the hour, a smaller one on the outer ring to mark a five minute increment, and one to four smaller lights denoting which actual minute it is. I usually reserve counting little red dots for STDs, but now it can also be used to tell the time, and it might go well with your LED dress shirt.

Lightmare LED Watch [ThinkGeek]