Riding fixed with a brake, but don't want to have a "normal" brake lever? Here is a lever for you. The Dia-Compe Gran Compe Shot Lever. Mount it right next to your stem and you can use it on either side. Both sides of the lever actuate the same brake caliper so you can essentially operate your front brake with either hand. Kind of nifty; kind of weird.
The lever comes with shims so it will work on bars with 25.4mm or 22.2mm clamp sizes.
Dia-Compe includes the following warning with the instrucitons.: This brake lever is designed as a sub-braking system for Track Racing bicycles, and its braking performance is different from normal braking system.