I am crying for the people who chose Anastasia and Swan Princess. I will say this, neither of those are Disney movies. They are both pretty good Disney knock offs. You insult their creators who both hated Disney.
Anyways My top four:
Black Cauldron: None of you have heard of this film I am...
No Pinocchio? That movie was one of the greatest pieces of animation to me it conveyed a beautiful, sad, and frightening story of a boy who just doesn't understand the world and dies (then is reborn) for it.
There was also Fantasia although that Night on Bald Mountain thing gave me nightmares.