THE MAN BEHIND THE CURTAINCNN (and others) giggle that Bush is caught on tape saying “shit,” and miss what’s really important about his exchange with Blairhttp://www.cnn.com/2006/POLITICS/07/17/bush.tape/index.htmlAn open microphone caught President Bush in an unguarded moment Monday as the escalating crisis in the Middle East prompted him to use an expletive in a conversation with British Prime