There are many who love Avatar: The Last Airbender, and for good reason, it is a great show.
The first two seasons were absolutely amazing, damn near flawless. Animation was decent, character development and voice casting were top-notch, and the kicker, it created for itself a culture. It gave an insight into cultures that we don't see anymore. Sure it's quirky and cartoony sometimes, but you can't help but feel as though you could live in one of these four great nations, you feel the world...
The reason the first two seasons are as amazing as they are is because they are as much about the story being told as they are about the places it is