I just watched it. I have to admit it was very cool for me to watch, but my wife (who is my age and grew up with the Beatles as I did ) thought it was pretty slow in spots. I would have to say that Part 1 is really for the real fan, although there are spots that are universally wonderful. We see Paul actually create the song "Get Back" from just playing around on the guitar, discover the chords to "Let it Be" while fiddling on the piano as the group does other things, and a group performance of "She Came In Through the Bathroom Window" with John on piano, and it's the complete song!
I am looking forward to the next two chapters. No matter what you feel about the Beatles, I would say it is worth getting the trial subscription to watch this thing,. It's great, and there are no breaks or commercials, so what are you waiting for?