Mitchell and Webb just keep on giving (one NSFW word):
I love how well he does Dawkins' voice; it sounds very much like him.
Maybe we need to think about getting M&W to TAM London. Those guys are clearly One (well, Two) Of Us. If you're not familiar with them, they do a comedy sketch show in the UK called "That Mitchell and Webb Look" and it's brilliant. I have links to them below.
I think that in many cases, being funny gets the message across better even than being passionate. And a whole lot better than being a jerk. And you can even kinda be a jerk if you're funny about it. Satire somehow seems to smooth the rough edges around a hard message...