well, guys about 3 or 4 months ago i bought a dirtbike - '01 Yamaha YZ426... never had one before, but riding dirt seemed pretty fun on a buddys borrowed bike... not long after, i started building it into a totally different bike that i've wanted for a long time - a street legal Supermoto.
basically, you take a big dirtbike, put 17" wheels on it ($1200 give or take) an oversized front brake rotor, play some tricks with the Tag agency, get it tagged, insured, add blinkers, a bigger stator (alternator), headlight and taillight, switches, mirrors, and a GPS speedo, and all of a sudden, you have a street legal really fun dirtbike capable ot taking turns faster than most sportbikes.
well, lastnight me and my 426 made our maiden voyage around town... about 60 miles or so.
Definitely one of the more unique things i've ridden on the street.
Picture is of it parked in teh only lighted area at our local warehouse we stunt at at night.