I'm up "City of Walls and Secrets" now. I really liked S1 but I'm enjoying S2 even more. Toph is a fun addition to the group. It's nice having a trio of villains rather than one conflicted sullen teenager. Also I like going through the Earth Kingdom more than the S1 episodes. It's interesting to see where this season is going; they already did the "Fire Nation besieges the friendly capitol" episode, so what will the finale be? It's also a nice twist that Ba Sing Se is a goodthought police state, I didn't see that coming at all. I don't think they ever hinted at something sinister going on there before.