I've recently built up a cheap fixed wheel bike after not riding a bike for a while, exercise being a major factor. Decided I might as well try out fixed as I can't be arsed messing about with gears and I'm so unfit. However advantage of not riding any bike for a while means that fixed just feels how I imagine a bike to be so no trying to free wheel falling off incidents.
Just at the minute I'm using the quieter roads of SE London as a training ground. Getting used to traffic overtaking me, slipping through narrow gaps before taking on the Old Kent and A2. Hopefully when I feel I'm good enough I'll be able to make one of the social events.