In that film Expelled - No Intelligence Allowed by Ben Stein, I was shocked to hear Richard Dawkins actually admit that "aliens" could be the origin of life on Earth! Uh, Rick, where did the ALIENS come from???
There's a clip of him saying something similar in The Atheist Delusion at a lecture and the students he's speaking to start chuckling; he looks up befuddled and says "I say! What is so funny?"