Come on, who doesn't love the original Avatar?
I am aware of the Legend of Korra thread, but I could not seem to find a thread for the original series. I'm surprised and angered by you, Animeforum Western Animation forum! For shame!
On a serious note, i've only seen up to Chapter 6 of Book 2, and hope to see the rest very soon. So far, my favorite moment is... Well, I don't remember the episode name, but it had a psychic named Aunt Wu and a servant named Ling who had a crush on Aang. The whole second half of the episode is pure awesome: they manage to convince the town the volcano's gonna blow, and then when it does AANG KICKS THE LAVA'S BUTT. It also helps it's one of the Kataang episodes :3
Speaking of Kataang, this thread can also cover shipping, if you like. As long as everyone remains civil and always keeps a focus on the original show, there shouldn't be any problems.