Age: 79
Occupation: Investor, CEO of Berkshire Hathaway
Previous TIME 100 Appearances: 2
In this year's much read letter to the shareholders of Berkshire Hathaway, legendary value investor Buffett chastised the heads of financial firms who walked away from the economic crisis unscathed. Buffett's dark-days bet on shares of Goldman Sachs is paying off quite handsomely, although his wager on General Electric has yet to turn a profit.