I'd be remiss if I didn't point out this cool post (and cool art) from Jeff Hebert especially since he mentions me. I've let the Hero City campaign die off a bit, but intend to bring it back in a month or so. I really have fun with it. Check it out.
Since Jeff uses three images on his site, I'll use one he left off, also by him, for CrashTest. Check the link above for the other three.