Did you seriously changed your opinion about GWB? Why? For me it's same, no reason to change it, no new facts to paint him better that what he really was. If I missed something in recent years about him then I am more than happy to learn more.
I will always remember his face from Fahrenheit during kindergarten visit when he was told about 9/11 and how he froze for 10 minutes. I don't like that 'document' and I don't like Moore since he was far from objective, but GWB is a rather dark figure. He has blood of hundreds of thousands if not millions on his hands and that is never ever going away.