Krugman sums it up perfectly - and I've made a handy chart of his main points:
What is the cause of our current financial situation?
Done and done. Why is it that the big-mouth sabre-rattlers like Bush & Greenspan are total incompetents, while the quieter guys like Obama and Krugman are right - and get things done?
It really does seem, much of the time, like we live in an Idiocracy.
If you haven't seen that movie, go, see it. Now.