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.

Each character in this movie — down to the smallest one — is an individual rather than a type, prone to spontaneous changes of mood and sometimes amusing outbursts of pettiness or ill humor.

Exactly the movie you think it is, but not the movie you want it to be.