Keith Olbermann declared Politico's Michael Calderone "worst person in the world' for reporting that Olbermann had said "oh God" as Gov. Bobby Jindal began his response to Barack Obama's address to Congress. Chris Matthews confessed that he had made the comment.

Calderone apologized Olbermann in his latest column. "It's never all right in journalism to assume," explained Calderone.

This video is from MSNBC's Countdown, broadcast Feb. 25, 2009.

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