John McEnroe

Since retiring in 1992, McEnroe's been anything but absent from the game or from public scrutiny. In 1995 he started as a color commentator for Wimbledon, the French Open and the U.S. Open. Still contentious, McEnroe has been known to rub his co-commentors the wrong way, claiming at one point that women do not know how to comment on the men's game, as well as saying that someone who has never played a final on center court (referring to commentator Bud Collins) can ever know what is really going happening in a tennis match.

McEnroe remains an avid rock fan, playing in his own band—the Johnny Smyths—named in honor of his second wife, Patty Smyth, the rock star of "I Am the Warrior" fame, with whom he lives in New York City with their children. In the true Renaissance spirit, McEnroe tries to do a little bit of everything. He opened an art gallery in New York in the early nineties; he has hosted his own game show on the BBC (The Chair, which received poor reviews), and, in 2002 he penned his tell-all biography, You Cannot Be Serious! which brought him into the news once again because of its revelations of drug use by Tatum O'Neal when they first started going out in the mid-eighties.