An artist for whom my appreciation has grown throughout my comics reading life is Gene Colan. It's tough to recall where I first encountered Gentleman Gene's work - it was most likely in Daredevil, though we all know he had lengthy tenures on Iron Man and Captain America (Tales of Suspense, as well as their solo titles), and of course Tomb of Dracula. I am less familiar with his time at the Distinguished Competition, though DC fans I'm sure have fond memories of his Batman and Wonder Woman output.
If ever there was a penciler who could look better in black & white, it's Gene Colan. His mastery of both motion and shadow make his work really pop without colors. Hopefully the samples I've provided today show this. And if I ever find a little extra cash laying around, I'd love to be able to purchase a copy of the IDW Artist Edition that showcases Colan's Dracula series.
Many thanks to all the wonderful people around the World Wide Web who have posted their Gene Colan treasures - they retain all ownership of these resources.