Sen. Joe Lieberman (I-CT) is making waves with his opposition to including a public option in health care as his vote in a Republican filibuster could block a bill entirely. But it's only the latest of many examples where Lieberman, who endorsed Republican candidate John McCain's 2008 campaign, has shocked Democrats by turning on his party. The Huffington Post compiled 15 incidents in which the Connecticut senator made liberals' heads explode across the country. Who could forget the time, for example, when he said whether President Obama was a "Marxist" was "good question" for people to ask? Or, reaching way back, when he criticized Democrats' heath care reform efforts in 1993 as "too governmental, too regulatory and too costly?"