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

Go in cold, and you're likely to emerge with your blood boiling. This has to be seen to be believed.

A great movie, one of the best of this year. There was a bit of confusion at one point in the plot, but nothing serious.

One of the film's great tricks is that, for a time, you think it will go down a rabbit hole of unrealistic glorification.