Richard Pryor boxed in the golden gloves. This clip always cracks me up - so funny: http://www.youtube.com/watch?v=ZXiSeOqvCrE
Taken from wiki Winstone was also a fan of boxing. Known to his friends as Winnie, at home he was called Little Sugs (his dad already being known as Sugar - after Sugar Ray Robinson). At age 12, Winstone joined the famous Repton Amateur Boxing Club and, over the next 10 years, won 80 out of 88 bouts. At welterweight, he was London Schoolboy Champion of three occasions, fighting twice for England. The experience gave him a perspective on his later career: "If you can get in a ring with 2000 people watching and be smacked around by another guy, then walking onstage isn't hard." - Ray Winston