One of my favorite modern artist's-- a legend in the entertainment industry as a concept artist and designer.. he's also the 'Godfather' of speed painting-- which is widely used by most concept artist's to quickly communicate ideas/composition, etc.. i just love his use of texture in his imagery
i had the pleasure of working with him on 2 James Bond games (Agent under fire and Goldeneye: Rogue Agent) -- he did various matte paintings, concepts, etc..
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check out his website-- he showcases both traditional and digital paintings:
http://www.goodbrush.com/Ballistic Publishing Grand Master interview:
http://www.ballisticpublishing.com/articles/craig_mullins/here's a video collage of his work on the Marathon trilogy:
http://www.youtube.com/watch?v=_bHE5xPzwoE&feature=related