People feel that the size of your testicles (ie balls ) relates to how manly and assertive you are. However, many people throughout history have been said to have only one testicle, and were able to trascend beyond plain mortality into the history of mankind. Kinda.

Famous people with only one testicle:

Adolf Hitler - Dictator. Fact mentioned in spanish popular science magazine Muy Interesante.

Napoleon Bonaparte - French military commander and dictator; namesake of the Napoleon complex.

Arnold Schwarzenegger - Bodybuilder, actor, politician.

Tom Green - Oddball (pun!) actor

Hansie Cronje - South African cricket captain

Hans Lippershey

John Kruk - Retired professional baseball player for, among others, the Philadelphia Phillies.

Lance Armstrong - Famous Tour de France Champion (suggested by quasi)

If you know of famous people with only one testicle, feel free to add to this short list.