Observe. (Click 'Enter', then 'Gallery.') This is truly amazing artwork... I can't even imagine the precision involved in retracing curved lines 3+ times in order to get sharp, dark lines. I suppose Etch from Toy Story puts this guy to shame in terms of speed, but I think that Etch has nothing on this guy in terms of detail. Guess the guys at Pixar just weren't ambitious enough... ;-)
Incidentally, something of interest to Firefly fans out there: Joss Whedon was one of four writers on the original Toy Story... no wonder it was so freakin' good, eh?
(H/T: By the Way...)