The Western Air Temple

I've watched the series several times now and always look forward to this episode. Sure, there are some good fight scenes, gorgeous landscapes, and the plot is driven along very well, but the thing I love the most about this episode (and the show in general) is the relationship between the characters and how far they come from episode one through to the end of the series.

I won't give anything away, but there is a moment in this episode where you get a huge payout from the emotional investments you've been making in the characters. It's an incredible story, one that is hinted at from the beginning but you never really know if it's actually going to happen until this episode.

This episode also has some great funny moments, especially playing on the fact that it would be so weird to be these characters and have this monumental change happen right in front of them. Hilarious, heartwarming, you just can't ask for better. Including this episode all the way to the finale, this to me kicks off the best ending to a show that I've ever seen.