I'll go ahead and spam for my best friend, Dusty Peterson. You might try to drop him an email. He's very busy, though, and very strict about having part of the money for the job up front.
http://home.comcast.net/~turbutter5/main.html
He's a video game artist, and works mostly in Photoshop. One of the biggest things he has on his resume is artwork for the game F.E.A.R.
Finding an artist is a pain in the ass. Seems like there are hundreds out there saying they're willing to work for you. When you actually give them material to work with, I find 90% of them get lazy and don't want to finish what they started.
Here's a piece of his work:
