Age: 27
Location: Los Angeles
2006 Revenue: $3 million
Employees: 30
Year founded: 2006

A multimedia company that's tapping into a growing community of socially engaged youth, GOOD gives away all its magazine subscription fees to charity, raising its own revenue entirely through advertising. Yet, founder Ben Goldhirsh isn't just interested in doing good -- he also wants to do well. That shouldn't be hard. This summer, the company's feature film, Son of Rambow, was bought by Paramount Vantage. Where did he get his entrepreneurial streak? It's likely genetic -- Goldhirsh is the son of the late Bernie Goldhirsh, who founded Inc. magazine in 1979.