Soul Searching Among Macroeconomists

There has been quite an amount of material on this in the contex of the unravelling financial crisis. The three links below are not exhaustive in themselves but should lead you to the most relevant contributions.

Free Exchange - Sometimes Economists Believe Strange Things

Econbrowser - The Failure of Macroeconomics?

Mark Thoma - The Unfortunate Uselessness of Most 'State of the Art' Academic Monetary Economics