I think Bush should do a Delay and go extremely radical(sort of like European prime ministers who demand confidence elections) and actually go before the congress and actually demand an impeachment hearing...right now this very instant! At the same time he should warn that all the books and papers and secret intelligence will come out for his use in his personal defence. All the secrets that all the congress men and senators will be open...all secret intelligence will be open for the public to take a gander at.
And yes Bush should do a mug shot where he smiles very broadly for the camera...!
I think this will happen anyway before the next elections. Some in 2006 and a lot more in 2008.