1:The Siege Of The North:It has great action and a great way to end the season

2:Appa's Lost Days:Very sad and we find out what happened to Appa.

3:The Day Of Black Sun:Great action, but it could have toned down the jokes.

4:Crossroads Of Destiny:Had the best Two-on-two battles of the entire series and a twist-ending.

5:The Avatar And The Firelord:A nice back-story and was kind of sad.