Edwin Moses, 60
Two-time Olympic gold medalist Edwin Moses set world records for the 400-meter hurdles four times between 1976 and 1987. He won 122 consecutive races over a 10-year span and famously took 13 steps between each hurdle (the norm was 14). Originally trained as an aerospace engineer, Moses had no trouble finding work after sports. He earned a masters in business administration at Pepperdine University in Malibu, Calif., went on to set up a business management agency for athletes, and then spent several years working as a financial consultant. It wasn't for him: "I just got burned out. I wanted to get back into public speaking and do something worthwhile," he told Sports Illustrated. Moses then joined Laureus World Sports Academy, a nonprofit which promotes the use of sport for social change.