First the disclaimer, don't buy a bike YOU'LL KILL YOURSELF!!!
Second, be it known that I am an "outside the box kind of guy" and an old motorcycle rider.
I'm thinking of selling off my two ratty POS bikes (1980 Honda XL500 & 1975 Triumph 750 triple - not running) and getting one of these:
http://www.suzukicycles.com/Products/DRZ400SMK5/Default.aspx
Before you laugh too hard this bike will kick most superbikes and supercars in 0-60 times, sure it tops out around 70 or 80 but it looks like alot of fun.
and if you lay it down you don't have to call a friend to help you pick it up.