June 2007 to January 2009
Investors never forgave the Yahoo co-founder for spurning Microsoft's $44.6 billion buyout bid. (He thought it was too low.) He stayed on the board until January 2012.
Who are 2012's young business stars? We've got the CEO of a blue-chip beer brand, an airline CEO who just placed the largest order in commercial aviation history, and Warren Buffett's new prodigy, among the Silicon Valley hotshots and others.