10) Dogtooth
The craziest movie I have ever seen might be this movie out of Greece from 2009, which is basically impossible to describe in words—one of the signs of a film executed at the highest level. The reason I cherish WTF moments in movies so much is that witnessing something completely insane with your eyes versus reading about it are two completely different experiences, and the more profoundly powerful one is quite obviously the former.
Dogtooth, in my romanticized memory of it, is like one big long WTF moment that contains little WTF implications in each aspect. Let it suffice to say that this movie shows the potential dark side of people who shelter their children from the world. Some interpret this as allegory; I think it’s just generally messed up.