Good video but in one important area I find it a bit lacking. In discussing the "great crowd of other sheep" I believe the grander point to be made is that the teaching is mainly a product of Watchtower history. Rather than see the teaching as simply a 'misinterpretation" it can eaisly be shown that the doctrine was heavily built around events during the 1920's. This approach is more directed towards breaking up the myth present in JWs minds that their doctirines come from "unbiased" bible study where individuals sit around and "let the Bible speak for itself".
I was fuzzy on this history myself and so I started a topic a while back where some interesting discussion opened this up:
http://www.jehovahs-witness.net/watchtower/beliefs/173226/1/motivations-for-creating-the-Jonadabs
I think my opinion is that rather than seeing the "other sheep" doctrine as either a "right or wrong" bible interpretation I see it as the product of a very biased and subjective experience. A person can take that wherever it leads them I suppose, but the facts remain that it's all subjective and in no way is "unbiased". In essence, the history of many Watchtower doctrines are rooted in historical events and not divine revelation. I don't quite believe that such a fact in itself is an attack on JWs (arn't all religions the product of some historical events?) but they sure will take it that way.