I finally got to watch it and I enjoyed it a lot. Only knock I have against it is it only runs through Led Zeppelin II, which I understand being the title of this documentary is BECOMING LED ZEPPELIN. However, I'd love for them to make another part that finishes up their story.
Becoming zeppelin is kind of a pointless snooze fest. I don't regret going, but what's the point? The first 20 minutes were cool. It's little snippets of interviews without much context over photo montages and live shots that aren't even synced up most of the time.