Stephen Bisciotti

Father died when he was 8; raised by sports-fanatic mother. Mowed lawns, babysat, pumped gas in high school. Graduated from Salisbury State. Goal: make enough money by age 35 so that wife and kids wouldn't have to work if father's fate befell him, too. Founded Aerotek in basement with $3,500 at age 23; provided engineers to aerospace industry. Now owns majority stake in Allegis Group, nation's largest staffing firm. Places workers in aviation, mining, construction and banking. Sales: $5.5 billion. NFL's quiet man owns Baltimore Ravens. Building football fields in inner-city schools.