Well hey, it's a sweet robot!
I've been looking at Simon Bisley's bible illustrations lately, and have to say that guy is an incredible draftsman. Aside from the drawing itself though, he does a lot with texture that I don't even understand. He seems to use a chamois and maybe even do some texture rubbings, and he gets an amazing range of stuff. He may even be using pens and charcoal and acrylic washes in there, I'm not sure. But it's beautiful to see somebody stretching the idea of a black and white pencil drawing like that.
As an aside, I mentioned that I'd recently discovered the joys of drawing on tracing paper on facebook. After being accused of being a 'dirty tracer' by a number of people, somebody half jokingly mentioned carbon paper. Well, I'm gonna get me some, and I'll post whatever comes of it when I get a chance.