Hold Me-Thrill Me: I can't remember what video it was, I think it was his debate with Cardinal Pell, but he said something similar to what cofty said above. EDIT: Here's the exact quote:
In the God Delusion I make a seven-point scale. One is I’m totally confident there is a God. Seven is I’m totally confident there is not a God. Six is to all intents and purposes I’m an atheist. I live my life as though there is no God but any scientist of any sense will not say that they positively can disprove the existence of anything. I cannot disprove the existence of the Easter Bunny and so I am agnostic about the Easter Bunny. It’s in the same respect that I am agnostic about God.