I find design inspiration in old typeset literature, letter pressed posters, as well as nature and in this case machines. The folks at Wrench Monkees in Denmark sure know how to make a well designed motorcycle. Based around a 70′s Honda CB750 with a lot of custom modifications. One of my favorite parts is actually the subtle curve of the handlebars.
A bit out of my price range though.
My bike is in photographs 3 and 4. While not as custom and solid, still a nice ride that I put a lot of my own blood and sweat into. 1975 Honda CB400F. Basically a smaller version of the above bike. See that seat? I molded it out of fiberglass and frenched the taillights/blinker combo from a modern sport bike. A lot of other work went into it as well. Really fun bike.