I'm gonna say that it's somthing that needs to be experienced. You can't explain what it's like to have sex (look at American Pie). Riding a fixed gear is something you have to experience, so, go out to your LBS, buy a cheapo track wheel, a tire, a tube, and a cog and chain ring (they can put em on for ya), then raid your folks garage, find their old ten speed throw away the rear wheel, throw away the brakes, brake cables, cable housing, delrailures, etc!!! adjust the chian, tighten the bolts, and go ride around the neighboorhood...

Then come back here and tell us all how cool it felt to ride afixed