These may not be super underrated, but they are some of my favorites that not everyone knows about.
1. "The Sword in the Stone"
With a story filled with magic and fun scenes, and of course the amazing line, "It's Pelinore, dash it all!" (Or maybe it's just funny to me.)
2. "Bedknobs and Broomsticks"
The Island of Naboombu is arguably the best part of the movie.
3. "Robin Hood"
Honestly, this is my favorite Disney movie and if you haven't seen it you need to.
4. "The Rescuers"
This movie actually deals with some pretty dark subjects for a kid's movie but is amazing nonetheless.
5. "The Rescuers Down Under"
It's like the first "Rescuers" movie but in Australia this time.
6. "Pete's Dragon"
The old one with the strange combination of old animation and live action.
7. "The Great Mouse Detective"
It's literally Sherlock Holmes as a mouse, with a rat villain. Oh, Ratigan!
8. "Muppet Treasure Island"
It's Muppets as pirates and Tim Curry is the best villain ever.
9. "James and the Giant Peach"
Beautiful animation, beautiful story, and songs, all around a masterpiece of a film.
10. "Atlantis: The Lost Empire"
The fast-paced storyline and amazing touch of fantasy mix together to create the most amazing story.
11. "Treasure Planet"
The entire world created in this movie is amazing and so incredibly creative that it should be seen by everybody.