The original Blade Runner is a must. It really provokes a lot of thought around class-based societies of the future and how humanity will treat itself. It's more of a study in the human soul. What is it's origin, how is it defined, etc. Ex Machina played on those same emotions in me. How do we define sentience, and what right do we have to say what that is even if we "created" it? Ethics. If you want to go deep on Blade Runner philosophy start by reading the wiki. It's pretty mind bending.