We just finished watching Avatar: the Last Airbender, the cartoon series. I am excited that Nickelodeon has green lit another Avatar series. The writing and characters have all been consistently better than good.
My favorite thing about the series has been the character development. We have seen all of the main characters change and grow- not just the bad guy who becomes a good guy, but the good guys struggle with what it means to be good, too. The final battle between Aang and the Phoenix King stayed true to that theme and ended the series on a perfect note.