This is a very good 101-style video on a pretty damn complex topic! I'm surprised I had never heard of this series before. I'm really glad people are talking about it more and I'm eager to see a generation exploring what gender is and what it means to them. Even just toeing the academic waters on the subject will show you how flimsy the whole notion of the binary is. I have to give props for the reference to Judith Butler - her work is very influential and pretty much must-read material. As an aside, I would also be wary of tagging this with "sexuality", as that doesn't have anything to do with gender issues and is a whole other discussion.
Lindsay Doe knows her shit. I think she has a doctorate, but I forget. re: tagging this with sexuality, it was the most appropriate tag i could think of at 10:00pm. I'd change it but I can't. On the plus side it may bring some people who don't know what they're looking for or how to talk about the subject to this video.