Founder, Netscape, Opsware, Ning, Andreessen Horowitz
Marital status: Married
Highest Education: Bachelor's degree
The Wisconsin native majored in engineering because he had read engineers had the highest starting income among college graduates. The bet paid off: Five years out of the University
of Illinois, Andreessen sold his first startup, Netscape Communications, to AOL for $4.2 billion.
Since then he's started two companies: software firm OpsWare (sold to HP in 2007 for $1.6 billion) and social-networking platform Ning. In July the eBay, Facebook, and HP board
member launched a $300 million venture capital fund.
Stress reliever: "Hard alcohol."
NEXT: Lorenzo Simonelli