Two possible examples:
Plame gave her uncleared husband access to the secret documents that he would later claim were forged. It was found out later that there was no way he could have seen them when he said he did -- unless his wife showed them to him.
Wilson was the one who on the DC cocktail circuit regularly talked about his wife being a covert CIA agent.
You're on to something...... I want to see Chris Matthews face when the indictments come down
Rove said he first heard about Plame's status from a reporter, so maybe one or more reporters lied about what he or she said and/or who was talked to and when.