At 6'5" and in excess of 300 pounds, Michael Clarke Duncan cuts an imposing figure and it comes as no surprise that his resume includes stints working in security. But this gentle giant, a jovial man with a warm personality and keen sense of humor proved his mettle as a screen actor with his powerful performance as the death row inmate John Coffey in "The Green Mile" (1999), Frank Darabont's adaptation of the Stephen King novel. The Chicago native was encouraged by his mother to pursue acting, and despite obtaining a college degree in communications, Duncan found himself digging ditches for