Al Sharpton is taking over for Chris Matthews as host of Hardball on MSBC tonight, a spokesman for Sharpton just announced via email. The guests for tonight's show include Hillary Clinton's campaign chairman, Terry McAuliffe, and Democratic National Committee Chairman, Howard Dean. Since Dean's entire tenure at the DNC has been a not-so-subtle of repudiation of McAuliffe's chairmanship, there'll be ample opportunity for some super-insider vituperation. Good thing the Rev. Al's there to exercise his calming influence.