I know what you mean, the "talking heads" style of documentary has been done to death and it's all a bit trite.
But concentrating on the man himself, what he said and how he's changed, I found it quite moving - here's a guy who's finally "grown up" and (seemingly) got his life on track, but it's taken him 60+ years to do it.
(And yes, Aimee is surprisingly hot!)