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Like a lot of artists working in the biz, Mark was bitten by the bug when he was watching a Disney animated feature:
"It was Sword and the Stone and it was the witches' duel. We had a black-and-white set at home and the colors were so vibrant. As I watched it, I knew what I wanted to do for a career ..."
He's been pursuing that career for the last few decades with quite satisfactory results ...