Just caught this latest CBO critique of the "stimulus" bill. Problem is, after a decade passes, the U.S. economy is actually smaller than if we passed no bill at all.
Of course, if your sole concern is trying to maximise domestic employment in the first week of November 2012 at all costs, screwing up the economy for your successor probably isn't that big a deal.
Bet Moveon.org won't cite THIS in their astroturf letters.
FYI; The title here is a paraphrase of a famous Keynes quote