I'm Chris, I'm a student at Iowa State University (in Ames, IA) studying mechanical engineering and I work at the LBS. Don't currently have a fixed gear, but almost. I picked up an old Lotus Classigue at work and am building up a fixed rear wheel for it. Parts should be arriving tomorrow so by the end of the week I should be rolling fixed. I also have a Trek 2200.
Not many fixed gear riders here, I only know of one really.