There were a handful of artists that took my breath away when I first got into D&D, in particular some of the cover artists for Dragon magazine. One of the very best was Dean Morrissey. He had a detailed realism and a moodiness that few could match. His pictures told an immersive story.
I hate to get ghoulish, as I have posted a few times about some my favorite writers and artists when they die. But I do it for those who might not have seen or read their work before. If you have never heard of him, you have a lot to look forward to.
Rest in peace, Mr. Morrissey.
Just a few of his incredible artworks, low res stuff taken off the net: