Although I haven't seen the video, and Dawkins is a smart guy, so perhaps he was making some related point.
Edit: Also, I think it would be just plain cool to observe natural selection in life that arose completely independently of our own. I don't think any reasonable person seriously doubts that natural selection is necessary for life.
http://en.wikipedia.org/wiki/Tests_of_general_relativity#Def...
"When asked by his assistant what his reaction would have been if general relativity had not been confirmed by Eddington and Dyson in 1919, Einstein famously made the quip: "Then I would feel sorry for the dear Lord. The theory is correct anyway.""
Video is here: http://www.youtube.com/watch?v=vueDC69jRjE
Jump to 1:20.
That same process happens to any system with external pressures. If I put a bucket in the rain, rain will collect in it. Someone coming along might exclaim, "See how perfectly that water has shaped itself to fit exactly into that bucket!"