File this hilariously arrogant little gem under "Roubini being Roubini." But also, he's right. The general public is subjected to a lot of a crank economic theory by laymen with political agendas. Among academic economists, opinion is a lot less diverse, and a lot more Keynesian -- partly because of all the evidence in Keynes' favor. One of the tragedies of the past two-odd years is the right's success in disguising this fact.
Anyway, the link is to Dylan Matthew's rundown of stimulus studies, which actually is great, and definitely is worth a perusal.