Directors Steven Spielberg and George Lucas are two of the billionaires who have won Oscars. Frank Trapper/Corbis via Getty Images These 12 billionaires are also Oscar winners. Some are the famous filmmakers behind some of the most commercially successful movie franchises. Others are billionaires who have accumulated their wealth through other avenues. When thinking about Oscar winners, NFL team owners and computer-science researchers might not immediately come to mind. But some of these ic...