The Jungle Book

Well that's a tough question, I don't have a favorite animation movie, there are so many of 'em, lol.
For me it would be almost all of the Pixar movies, with the Toy Story trilogy on the top.

Might just be my nostalgia but I've always loved the Toy Story movies.

I really rate The Polar Express, but it's a Christmas film so now might not be a great time if you read it.

FROZEN!!!!!!!!!!!!

Wall-E.

It's a pretty genius movie in general, and should have gotten at least a nomination for Best Picture at the Oscars that year. I like Pixar movies in general though, especially Up, Finding Nemo and the Toy Story movies are great!

Paprika
Nightmare Before Christmas
The Girl Who Leapt Through Time
Princess Mononoke

Honorable Mention:
Over the Garden Wall isn't a movie, but it is an amazing cartoon miniseries

i recently watched a movie called "EXPELLED FROM PARADISE", it has by far the best animation ive seen in an animated movie, it has an actually interesting plot and it ended with the possibility of having some sequels, its not the greates movie ever but it was good and it has a lot of potential of having even better sequels.

if you have ever seen some Guilty Gear XRD gameplay, this movie uses the same technology of using actual 3d models with 2D looking visuals (sprites), think of it as having a 3d model and actually drawing a 2D picture on top of it, so it looks 2D but i gets an incredible boost in quality of animation, thanks to that it gets some incredible looking combat and camera angles.

Now if i had to say which are my favorite movies i would have to point out the Hellsing Ultimate Movies, Mardock Scramble and the Kara no Kyokai movies

Kara no Kyoukai

Hellsing Ultimate

Mardock Scramble

I can't decide. Animated movies are my favorite movie genre and Disney animations are my favourite. I guess I like Beauty and the Beast and Lion King the most. Pocahontas and Ratatouille was really good too.

Aladdin