I just ordered this: Horrendous Evils and the Goodness of God (Cornell Studies in the Philosophy of Religion)
, by Marilyn McCord Adams
The author is Catholic, and from an interview I've listened to, she seems to have developed a fairly convincing theodicy... as far as theodicies go. The gist of it, from what I've gathered so far, is this: If anyone truly and unflinchingly considers the scope and severity of suffering on earth, there is no possibility of reasonable
optimism without faith in a God who is powerful and good and just enough to make all things right in the end. Or something like that. I may post more about it when I actually read the book!