I'm a HUGE Anime fan and thought at first that this would just be some generic rip-off with no sense of emotion or was I wrong!
Avatar is not only deep and well-thought out but it also transcends the box it was put in; what with it being made by Nickelodeon and all... It's a brilliant show full of extremely realistic characters and themes. Everything from the animation, pacing, music and story is just PERFECT without a single minute to waste. Such an energetic series that knows exactly what it's doing and doesn't try to be anything else than an Epic Masterpiece.
My favourite character is Zuko, he's the one who resonated with me the most and I look forward to new seasons of Avatar: The Legend of Korra, an equally awesome show! Love this world and can't wait to rewatch it. :)