Online Journal is usually a bit too ranty and neurotic for my liking but it ran a great article slating Bush's complete inability to engage in rational, lucid, public discourse. Of particular note is his abuse of the term "evil". This, of course, applies to a great many intangible terms that appear far too frequently in our rulers' vocabulary- "terror" is a good one, or "threat" or "intelligence" . . . how about "insurgency"? All of these words are bandied about by politicians without any attempt to elaborate on their meaning.
I think Blair is worse because at least he is aware of what he's saying. Bush can barely read an autocue, let alone comprehend the meaning of the words he's parroting.