Paul Krugman won the Nobel Prize for Economics this year. He advocates the use of massive government spending, similar to the 1930s New Deal policies implemented by Franklin Roosevelt, to address our current economic problems.
Amity Shales is the author of "The Forgotten Man: A New History of the Great Depression," published last year. She makes the case that Roosevelt's policies were very counter-productive and made the depression worse than it otherwise would have been.
This article is a good overview of an issue that will be extremely important in the coming months and years.