The Anthropic Design argument, otherwise known as the 'Fine Tuning' argument suggests that the extraordinary level of fine-tuning required for the universe to support life points towards a designer. The main alternative theory suggested to explain the 'Anthropic Principle' is the 'Multiverse' or 'Many Worlds' theory which posits up to an infinite number of parallel universes to explain the surprising fine-tuning in our universe.
In the following article, which I found on the God: New Evidence site, Peter WIlliams takes on Dawkins' objections to the anthropic design argument:
Anthropogenic Design Argument - Williams
More on God vs the Multiverse here (slightly cheesy video)