Disney had a run of movies that extended from Little Mermaid to Tarzan where each was better than the next. Although I dislike the "Disneyfication" of classic stories like Little Mermaid, Pocahontas, Hercules and Hunchback of Norte Dam, Tarzan
are outstanding, both for the storyline, music, animation and for the way they took a story that needed translation and modified it while keeping the feeling and heart of the original story. (The Mulan story varies from one location to another within China so Disney had a fair amount of license and the original Tarzan was so full of ignorant statements about Africa that it could never come to the screen in 2000 in its original form.) I think both of those are must sees if you like animation. Lilo and Stitch
is another Disney hit that is a very entertaining parent/child watch. Lots of humor, decent storyline, lots of Elvis tribute songs plus a throwback animation style.