[I haven't seen it yet]
Excerpt:
"This is a movie primarily concerned with numbers and the way that information is fed, processed, and acted upon. But it plays like the greatest paranoid thriller since "All the President's Men." Poitras knows how to keep the narrative moving at a swift pace, how to convey all of the secrets Snowden disclosed in a quick and clear manner, and more than that, she understands that just watching Snowden and hearing his words are enough to carry much of the movie. While you get the sense that he's passionate, you sense that blowing the whistle the way he did seemed like the most logical choice."