Fantastic delivery, yet sub-par content
You have a gift for communicating ideas, and the Flash Lecture medium works well for you.
That said, I find myself constantly irritated by the same problem over and over; none of the most basic counter-arguments are addressed. Whilst the concepts addressed here are indeed massively intriguing, there is the inherent issue of the ease with which they can be questioned. This isn't a massive problem, though. Indeed, it's something every branch of science at one stage would have to tackle. But it -does- need tackling.
I would feel much better as a viewer if you were to spare a small amount of time whenever you make a claim to consider what a sceptic would say, and address it. Even an acknowledgement that some suspension of commonly held thinking being required would help. This would be massively helped by citing studies and statistics, or at least demonstrating your claims. Credit where it's due, you do make attempt to link notions to things readers can familiarise with, but it does often come off as almost the hopeful linking of potentially unrelated facts usually reserved for the most resourceful of Moon Landing Conspiracy architects.
TL;DR: Fascinating and wonderful to listen to, especially for those to whom the content is new and interesting, but for the sake of science please present a balanced argument and acknowledge flaws and counters.