Letter to Romenesko:
Is nothing sacred? George W. Bush plagiarized an episode of the 1980s BBC comedy "Yes, Minister." As fans of that Brit-com will recall, Prime Minister Jim Hacker ordered an investigation of a government leak, demanding that if found the leaker be tossed in jail. After the usual expensive, lengthy inquiry, his staff reportered back -- we've found him. Well who is he, the PM asked? It's you, Prime Minister. (Dialogue from memory.)
P.S. OK, maybe it wasn't plagiarism, it was an homage.