He just doesn't come across well. He seems combative, argumentative, etc. In other words, another incompetent Bush administration official (and yes, I know he was there before Bush came in). As I noted - this guy was CIA director at the time of the worst intelligence failure in U.S. history. He didn't say a damn thing when we invaded Iraq, when he received the medal of honor and on and on until he's got a book to push in order to financially benefit himself.
Just not credible.