Films raise questions on a various means in style and content. However, certain films specifically challenge your intelligence while the filmed is screened in front of you or after the end credits. It assaults what you actually know or thought about beforehand and can alter your way of thinking or how you approach certain things afterward.
There is a difference of raising a question, such as, who was the murderer? What really happened at the end? Was it all a dream? But when a film resonates in your experience and you have to do research or look up the filmmaker's intent if you can find it, or read books on the subject that was explored, you can say it challenged you in a way that most films don't.
Therefore, here are 10 films that puzzle, ponder, and spark questions beyond the mere brain-thinker of a film.