The music's one of the main reasons I watch this show...it's just so cool.I especially like the music when Aang goes into the Avatar State,and the background music in some of the fight scenes(like the Agni Kai b/w Zuko and Zhao in ep.3)...they also used to play a particular sound whenever Sokka failed in something he did(like in 'Warriors of Kyoshi',when Aang and Katara r eating,he's sitting slumped in a corner,coz he can't believe that he was pushed around by a gang of girls)...but they don't play that music nowadays...probably coz Sokka's now all grown-up and mature.