Rules: You only can take one anime movie to a deserted island where you'll spend the next six months. Thing is the store only has one copy of each movie so you can't pick a movie that is already posted.
And if you can add the reasons why you like it, maybe some links, all the better.
I'll start.
Wings of Honneamise
Images
Studio Ghibli level animation. Great hard SF story. Fun for the whole family except for the attempted rape scene.