Interesting in parts. Seemed to me like it covered old ground, and it also seemed like Dawkins was being a little dim-witted. He asked the wonderful question about whether there were things we couldn't know, and then proceeded to use old models to illuminate those new concepts -- engaging in a bit of circular reasoning. This served to illustrate his point well to the easily impressed (hey! He's talking quantum physics! Cool!), but left the viewer wondering how Dawkins got so lost in the epistemological forest. In other words, he did the same thing he was describing happening, using old models of reality to speculate on what new ones might be like ("middle world") Throw in a little military-bashing for an audience-pleaser (would it have been as funny using another stereotype?) and I was underwhelmed. YMMV, of course.
Not jaw-dropping.