My Fiance, Brian is working on a full sleeve on one arm and he's got a Star with a "C" in the middle (for me! ) and a Sun on the same arm (but I've gotta grab some pics of those guys).
Here's his partial sleeve; its a work in progress, as you can see.
He's very into the bio-mechanical theme and if you're having a hard time grasping what's goin on there, locate the skulls and the rest of it is design work.
I love those grey washes....I used to do some tattooing in my younger days myself, but that has a real painterly feel to it.