Michael moore is a sick individual looking for any kind of audience and will say or do anything to get one. I've given this/him more time than he merits under any circumstances.
Look at the covers of the foreign editions of his books and videos and many have "red white and blue" designs to let the potential audience know that he is knocking America again.
It is a good investment in Michael's career for him to stump for "the butcher of Kosovo". It gives him plenty to gripe about and he can always try to claim "Bush would have been worse".
I wonder what the current state of Moore's "October surprise" Bush bashing election film is.