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10. Richard Fisher, Dallas Fed president
Richard Fisher, the president of the Federal Reserve Bank of Dallas, has never been particularly shy about his opinions. But in recent speeches, Fisher has emerged as one of the most vocal critics of Fed monetary policy, frequently dissenting during his year-long stint on the Federal Open Market Committee.

Although Fisher will rotate off the FOMC in 2012, he shows no signs of tamping down his rhetoric. In early December, he warned in a speech that America is headed for "social unrest" unless the U.S. can get control over its ballooning deficit. In what was clearly a critique of President Obama, Fed Chairman Ben Bernanke and just about every other policymaker in charge of economic policy, he added, "Our nation has a crying need for public leadership to correct what's wrong in the economy." (Image: Bloomberg News)