Just name the movies you think everyone should have seen at least once in their lifetime. Go!
My Neighbour Totoro is unique. In this film kids actually act and talk like kids. It is extremely imaginative and magical while not trying to be epic. It treats the audience as intelligent, curious people, giving a lot of quiet thinking space in between scenes.
It is a masterpiece of film making. The other Studio Ghibili films are good, but Totoro remains to be my favourite.