Any documentary covering such a great franchise automatically has lots of potential, especially since they were able to interview most of the greats behind the trilogy. While I felt it opened strong, about halfway through it felt unfinished. I attribute this to editing that could have been improved. Of course you're going to have mounds of interview footage, but it's the job of the editor to prioritize, summarize, and excite for the sake of telling a well-defined story. It could have been about 30 minutes shorter than it was, and certain tangents (like the hoverboard and Delorean restorations) could have been summarized more concisely. It was also a bit distracting that interviews with the stars was interspersed with fans and others whom the audience has never heard of. I'm glad fans were interviewed, but their footage could have been more separate and not given equal screen time with the celebrity interviews. I mean if you have these exclusive big-name interviews that are hard to get that people want to see, why spend less time on them? Oh, and the part where Dan Harmon said parts II and III sucked could have been taken out altogether. On that note, Harmon's screen time should have been severely cut. Most of his comments were either sexual or overly negative in nature and didn't really fit with the tone of any of the other interviews.
I was also surprised that nothing was mentioned about the amazing score Alan Silvestri wrote for the trilogy, considered by many to be the best film score ever written, especially after all the fuss they made about Huey Lewis's role with the first film. It was also quite strange that all the interviews they included about Alan Silvestri had nothing to do with his role with BTTF. As a musician I felt this was a huge missed opportunity to hear about his composing process for the trilogy. And I have to agree that the guitar cover of Silvestri's score that was featured was too somber in tone and was overused.
