I just completed the final season of Avatar: The Last Airbender, and all I can say is wow. This show is, without any doubt in my mind, one of the top 5 television shows I've ever seen. It ranks up there with The Simpsons and Pushing Daisies, in my opinion, and that's saying something (seeing as how big a Simpsons nut I am).
The series finale takes place across four episodes, each more epic than the one before it (and the episodes leading up to this finale are just as good). There are some excellent surprises throughout each episode, with the vast majority of the lingering mysteries finally being resolved. A surprising twist occurs in the finale's climax, and it's safe to say I was thoroughly surprised. The ending was fulfilling beyond anything I imagined.
There are only two things that could have made the series better. First, I was disappointed that we didn't learn more about the air bender society. If Aang is the only one left, what becomes of their heritage? Has this nation therefore truly become extinct? Second, there were still a few strings left dangling at the series end. I won't list them here so as to avoid spoilers, but I'd love to know what becomes of these threads. Another episode (or two ... or three) would have been really appreciated to see where everyone ends up. Perhaps the creators of the show will come back in the future to wrap up these threads.
All in all, I had an enjoyable time with this series. Even though I'm a little sad to say goodbye to it, I'm oh-so-glad I took the journey. I now have other shows to catch up on, both old and new, and that's what I'm off to do next. So long, Aang and company. It's been a wonderful ride.