Though I'm not a fan of fixed gear bikes, I do like single speeds and the the clean, minimal design of these bikes. If I didn't just drop $250 on pimping out my current bike I would totally consider these custom bikes:
Republic Bike lets you choose from a variety of colors to create a custom bike! Perfect for people that aren't super bike savvy and don't want to try building their own.
[$344, Republic Bike]
[Via Por Homme]
Related: Say Goodbye To Chain Grease, Eco-Friendly, Wooden Bikes, Most Expensive Bike in the World. I Wonder Why. . .