The History Channel hosted a documentary chronicling the 50 years of Star Trek. It really only scratched the surface of each series. They didn't even have Shatner on talking about his role. They did talk a lot with Nimroy before he passed away. I wish they went more into the the earlier series, how they built sets and things. They did drive home the point the show was too radical for 1960s TV (interracial kissing, women in positions of power) and that's why it was canceled, not because nobody was watching it! I simply thought it wasn't popular enough, so I did learn at least one new thing that I wasn't totally aware of.