- "Funny Aneurysm" Moment: When the Gaang split up to look for Aang, Toph latches onto Zuko's arm, cheerfully stating that "everyone else has had a life-changing field trip with Zuko. Now it's my turn!" Later, she tries to tell him about her troubled relationship with her parents; specifically how they gave her everything she wanted materially, but she never felt like they gave her what she needed most: their love. Zuko blows her off, and she grumbles, "this is the worst field trip ever." It's Played for Laughs, but proves to be Harsher in Hindsight for those who've seen The Legend of Korra, as Toph's unresolved issues with her parents bleeds into her relationship with her own future daughters.
- Strawman Has a Point: When Aang says he can't kill the Firelord, Sokka says "Sure you can! You're the Avatar! If it's in the name of keeping balance I'm sure the universe will forgive you!" Aang thinks he'll damage his spirit if he kills, but Avatar Yangchen later says that his sole spiritual duty is to protect the balance of the world! If he kills to do that and is justified, (Aang even says "Fire Lord Ozai is a horrible person and the world would probably be better off without him.) then Sokka is right!
YMMV / Avatar: The Last Airbender "Sozin's Comet, Part 1 - The Phoenix King"