For several reasons, I generally avoid making fun of religion. First, religion is a deadly serious problem that is getting worse. Second, I hardly think laughing at someone is likely to persuade him to reject faith in favor of reason. And let's face it - poking fun at religion is rather like shooting fish in a barrel. It’s not very sporting.
Nevertheless, I recommend watching these Mr. Deity videos. They are utterly hilarious and not mean-spirited.