At RichardDawkins.net there's a link to a video lecture by the man himself.

Summary:

Richard Dawkins believes science's ability to admit ignorance is one of its greatest strengths. On the flip side, he proposes that faith remains arrogant and all too certain of its validity without any rational set of proofs.

As usual, Mr. Dawkins is in fine form: witty, eloquent and convincing. Well worth the investment of 24 minutes.