Divine Command Theory and the problem of moral authority
Eric Rescorla and his commenters are having a great discussion of Divine Command Theory and the Euthyphro problem. Eric is saying more rigorously something that I've tried to articulate in the past -- basically, that belief in a law-giving God is neither necessary nor (without more) sufficient for morality.
I actually visited Eric's site because I was looking for one of his papers on economics and computer security, but I'll take a good discussion of the Euthyphro instead...