One helpful (if imperfect) way to estimate ‘deep culture’ impact is to look for films that have achieved success what at what Hollywood sometimes calls the “double bottom-line.”
High Culture? Pop Culture? Shouldn’t a Great Film Impact DEEP Culture?
High Culture, Pop Culture, What About Films that Impact ‘Deep Culture’?
By necessity I have developed my own informal (and often intuitive) system for finding worldview-shaping films that you might find interesting as you consider your own choice in films.