172. James Jannard
The USC pharmacy student dropped out in the 1960s when the dean told him he had to cut his hippie hair. Jannard went on to found sunglasses maker Oakley, which went public in 1995 and sold to Luxottica for $2.1 billion in 2007. By then he was working on his next project, Red Digital, building highresolution digital cameras that have since been used to shoot such movies as Avatar and The Hobbit. Up next: the world’s first holographic smartphone, which, he says, has the best mobile camera on the market and will be available next year.