There was some movie that came out a few years ago that I am trying to find. It was a Japanese Anime movie. I saw clips of a girl on a train and I think there was a ghost that followed her around. I know that isn't much but this movie was supposed to be great and even reviewers that never talked about animation were talking about this film.

Sorry I cannot provide more clues and thanks for your time.

Spirited Away

Correct. Sadly, there were no giant robots.

If you enjoy it, also check out Princess Mononoke, Nausica, and Grave of Fireflies.