Still holds up almost 20 years later. The animation is still so rich and impactful, and perfectly matched to the sound effects. Even the story and jokes hold up like a fine wine. It would make sense to reboot/remake this if it had aged poorly and needed a refresh, but why attempt to mimic perfection? The only acceptable remake I still hope for would be a 1:1 remake with even higher quality animation, but I don't think the industry has any intention of staying true to the original work with all these remakes. If only they might have the original thought of telling a different story inside the avatar universe, instead of trying to re-tell perfection with Aang's story.