Charlotte's Web (Charles August Nichols and Iwao Takamoto, 1973)
This was made in the 1970s, but I have distinct memories of watching it when I was in school in the 1990s and early 2000s. The animation is even more beautiful than I remembered! I am so grateful that I grew up on films like this. Films that affirm human dignity and the importance of friendship, community, love, and nature.