The Princess and the Cobbler: The tragic maligned animated masterpiece that holds the Guiness record for the longest production time for a motion picture of all time. I include here the Princess cut, which is better than the Thief version, but another recobbled one is out there somewhere which is more definitive.
Reading about it's history, particulary in relating to Aladdin, is just about heartbreaking.
But, to cheer you up- I present- THE SOVIET RUSSIAN WINNIE THE POOH! (no really, it is)
...who is way more badass than the western version, I might add!