Lee Smolin argues pretty concretely and convincingly that the anthropic principle cannot be science because it cannot yield falsifiable predictions:

http://arxiv.org/abs/hep-th/0407213

On a side note, his book "The Trouble with Physics" is a great (though very pop-physicsy) read on the history and philosophy of physics.

A paper that argues against any "fine tuning" of the universe to support life: http://search.arxiv.org:8081/paper.jsp?r=1101.2444&qid=n...

I'm not sure how arxiv.org work, but the paper is arXiv:1101.2444 just in case.

On a side note, the banner for his site is interesting. One would guess that a person his notoriety does not need to explain who he is; Britney Spears does not describe herself as "performer Britney Spears", just the name is enough. I think that shows a string level of humbleness.