Travis Barker and Shanna Moakler. Donald Trump and Rosie O'Donnell. Britney Spears and Kevin Federline. These famous squabbling celebs have nothing on a new pair of high-profile Americans competing for the nation's highest office!
During last night's Democratic debate in South Carolina, rivals Barack Obama and Hillary Clinton sparred frequently and bitterly, making viewers entertained but uncomfortable, and leaving John Edwards trying to get a word in edgewise.
Some highlights ...
Follow the jump for another clip from last night, in which Barack Obama takes issue with remarks made by Clinton ... and by the other Clinton.