This bike appeals to the pilot in me...
http://www.motorcyclistonline.com/fe.../photo_03.html
Although, coz the engine is mounted cross-ways, (or I think the correct term is transverse) one hard rev and you would probably slam it on its right-hand side.
This one is in-line and is my favourite:
http://www.motorcycle-usa.com/Articl...ID=4609&Page=1