I would be remiss in my duty if I didn't chime in to pay respect to the passing of one of D&D's great old school artists, Jim Roslof. Roslof was one of those prolific illustrators that managed to capture my imagination so long ago and keep me involved in the hobby as long as I have. As an artist myself, I see his style of sinewy lined, and dyanmically posed, well-proportioned characters one that any aspiring illustrator should study and emulate. Even his most complex works like the famous full-page spread of Thor fighting the Midgard Seprent from Deities and Demigods is really just a beautifully composed yet simple piece of B&W line art when looked at closely. Truly less is more when it came to Roslof. He will be missed.
For more anecdotal words about Jim Roslof, read this article at Wizards.