This is a must-see and one of the best documentaries - and films - of this year.

Unshakable, witty and deeply felt, the film will be paying emotional dividends for a long, long time.

There are moments in this movie where the great movie it could've been peek out... They're fleeting, here, but they're worth savoring, and they happen often enough to make it worth your while.

It is encouraging that the film ends so strongly.Otherwise, it wouldn't have been a particularly memorable film