[Splendor]

The Act of Killing - https://www.imdb.com/title/tt2375605/

"A documentary which challenges former Indonesian death-squad leaders to reenact their mass-killings in whichever cinematic genres they wish, including classic Hollywood crime scenarios and lavish musical numbers."

[fetus8]

Mr. Oppenheimer is one of the most interesting film makers I've had the chance to meet and hear in talks at Q&As. I strongly recommend his two films, and if you can ever find your way to see "Titicut Follies", do it. I saw it at Telluride with an intro by Oppenheimer and was blown away.

"Titicut Follies" is a documentary by Frederick Wiseman about a mental institution in Massachusetts, in the 1960's. It's a haunting film about the way the patients are treated, it's quite extreme and sad but fully worth a view. You've never seen anything like it, and probably can't imagine how truly horrifying it is.

[nolta]

Plus its followup, "The Look of Silence" http://thelookofsilence.com

[Glench]

"I have not seen a film as powerful, surreal, and frightening in at least a decade." -Werner Herzog

[smokecrack]

_The Look of Silence_ is a companion to that film and I personally feel the more powerful of the two.

[SeanBoocock]

This is by far the most powerful documentary I've ever seen, along with the sequel "The Look of Silence".