Well, I have to say it: In a scale from 1 to 10, this end for "Avatar: The Last Airbender" deserves... 100 points!!!!. I love it!!!!.
Of course there are still some plotholes like what happened to Azula after been defeated, what happened to Zuko's mom and if the "Air Nomads" will reborn somehow. But yet, that's a great end!!!.
I also have to say, I was very confused when I saw Azula's reaction after been defeated. On one hand, when I think in all the monstruosities she has done, I have to say "Now you have what you really deserves". But seeing her in that state, I can't avoid feel me sorry about her. Don't you think so?.