The Little Mermaid (Two-Disc Special Edition)
Allow me to clarify: I do not think little girls should watch this movie. It will give them weird body image issues (why can't I wear purple shells?) and preconceptions (fat people = evil octopus witches). THAT SAID: this movie is memorable, amusing, and sparks one's longing for an undersea world.
I love love LOVE this Disney cartoon. Catchy songs that I, of course, know all the words to. And I actually prefer how this story ended compared to the original fairy tale. Happy.
If I had to choose an older Disney movie to call my favorite it would be this one. Scuttle is by far the best character ever.