John Mosers post below on the Birch Society reminds me to tell you that he knows of what he speaks (not that you would doubt that!). When his next book is published (next month, I think), Right Turn: John T. Flynn and the Transformation of American Liberalism you will have the opportunity to read something quite interesting and engaging about John Flynn, a man who moved from the Left to the Right, and thereby revealed some problems and contradictions in both positions. Moser does a masterful job of laying out Flynns "ideological odyssey." Look for it (published by New York University Press).
If you beat us to it, let us know what you think. Sounds intriguing.