There are actually quite a few "game-artists", especially now that the independent gaming scene is thriving. But Rohrer is likely the most interesting for the casual observer. Passage has the startling capacity to reduce people to tears in five minutes flat. His works are absolutely without equal for their inventiveness and resistance to conform to conventional wisdom.

This is my favourite article about him, and one of the most memorable articles I've ever read: http://www.esquire.com/print-this/future-of-video-game-desig...

It's a great starting point for people who are unfamiliar with his story.