It's fun, it's light, [but] it has a hard time when its tries to get heavy.

A lot of perfectly good film show their cards early, establish a unique premise and let the audience explore a topic at a leisurely pace, without much in terms of surprise. this film is not one of those films.

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

One of the best movies of the year! Incredible from the beginning to the end.