As I was randomly looking for followers on Twitter, (check us out!)I ran across the State Bicycle Co. from Tempe, AZ. Their mission is to produce the coolest, cheapest and best designed one speed bicycles.
Each style is available from 3 months to a year and once they are sold out, they are retired. I can't imagine a cooler bike to start reducing your carbon footprint on!
These are my faves.[thanks! for the images: http://www.statebicycle.com/default.asp]