Avatar: The Last Airbender.
Miles more interesting and well written and developed than I ever would have expected.
I'm going to watch again as I read the Tor.com rewatch recaps, but let me just say this: as a stage combatant, I was mightily impressed by the fight choreography. I don't doubt martial artists have a deeper understanding and a very different take, but as someone who is coming from a "What is the next move that makes sense/is character driven/looks good to an audience" point of view, it's outstanding.
In particular, Zoku and Sokka's fight against Azula? Beautiful. And more than a little bit hot.