Nice little PhotoShop image.
On a serious note, I'm not sure how to categorize the 9/11 commission and all of the Congressional Inquiries into 9/11 intelligence and pre-Iraq War intelligence. Two terms immediately come to mind, though. Witch Hunt and Fishing expedition.
Stuff like this doesn't help anything. My suggestion to Powell would be to keep quiet. Adding fuel to the partisan fires is not the best election year strategy. Rather than admitting to being wrong, why not turn the question around and focus on where the weapons went since they no longer appear to be in Iraq *ahem* *cough* *cough* Syria *cough*