It's incredibly hard for me to compile a list like this because it takes a lot for me to label a movie as a "favorite". It's not enough to just "like" it, I have to feel drawn to it, compelled by it, inspired by it, want to know everything about it. At least to an extent. I'm also incredibly picky when it comes to animation. Not everything catches my fancy, most of the time the movies that speak to me the most aren't be the ones widely regarded as the best (case in point, Studio Ghibli/Hayao Miyazaki movies. They just don't do it for me, I'm afraid). So I'll be surprised if I actually reach the 10 mark.
1 - Kung Fu Panda
2 - Kung Fu Panda 2 (yes, I count them separately and MY WORD IS IT HARD TO CHOOSE BETWEEN THESE TWO)
3 - Pokémon: the Movie/ Mewtwo Strikes Back
4 - Asterix and Cleopatra
5 - Surf's Up
6 - Lucario and the Mystery of Mew
7 - TMNT
8 - Rango
9 - Cats Don't Dance
10 - Sonic the Movie
Wow, I did it!
An honorable mention would probably go to The Secret of NIMH. I'm not a Don Bluth fan, though I do admire his work and legacy in the animation industry, and NIMH, while it has issues imo, is just fascinating enough on different levels that I can't be completely immune to it.
Oh how could I forget about Coraline?
I love Nightmare Before Christmas but I thought it was a Disney movie.
It is. Or, at least, Disney is no longer fearful of labeling it as such.
TNBC was originally released under the Touchstone label, which in very simple words is where Disney released movies they were unsure they wanted people to associate with the brand, or were huge gambles. But since TNBC became a cult hit, Disney has chosen to give it the same status as, say, Pirates of the Caribbean.