https://www.amazon.com/Chris-Claremonts-X-Men-Claremont/dp/B079J7RPV2/ref=sr_1_29?s=instant-video&ie=UTF8&qid=1518464231&sr=1-29&keywords=x-menI just saw this yesterday and really enjoyed it. It went over his entire run and had a lot of tidbits about some of the things that were happening behind the scenes. It was especially interesting to hear about how editorial started to push him into creating more titles and (eventually) pushed him out of the franchise that he had (essentially) created. Jim Shooter actually came off pretty well here.
I think anyone on this forum would enjoy this documentary.