The abrupt transition from the 80's concert footage to Kirk Hammet's cowboy ranch is one the funniest things I have seen in my fucking life. Conversely, Lars Ulrich's awkward reunion with Dave Mustaine is one of the saddest.
That's kind of the beauty of this documentary: it's equal parts hilarious and tragic in just how honestly it portrays a band of three middle-aged thrash metal dads at their lowest point. It's a fascinating look at the creation of an infamously divisive album, one that I'm still not sure how to feel about all of these years later.
The ending feels like a bit of an unearned victory lap, but that aside this whole movie is, just like St. Anger itself, remarkably unfiltered given the high profile of its subject matter. Even if you're not a huge metalhead, this is worth seeing for the psychological portrait it paints. Still one of my favorite music documentaries.