One point about which I disagree with Eric is on his Pantheon of the Econ-Gods. He, of course, has Tullock sitting at the top with Becker, Friedman, Buchanan, Coase, Alchian, Demsetz, Hayek as the Elder Gods. My ranking would interchange Tullock and Ronald Coase. For me Coase is the greatest econ god. With Tullock as one of the Elder Gods. But I am a theory of the firm man. Coase received the 1991 The Sveriges Riksbank Prize in Economic Sciences in Memory of Alfred Nobel for
"For his discovery and clarification of the significance of transaction costs and property rights for the traditional structure and functioning of the economy."Coase is most famous for two papers including his 1937 paper "The Nature of the Firm", the paper which started the whole theory of the firm literature.
Update: In the comments section to Eric's posting at Offsetting Behaviour, Brad Taylor makes the valid point that Douglass North should be added as an Elder God.