(WARNING: SPOILERS AHEAD. LJ-CUT WASN'T WORKING)
Toph/Sokka/Suki triangle FTW. Though I prefer Toph/Sokka Toph's possible crush on Sokka is so adorable. Thought it was so obvious that Sokka still feels (very) strongly about Suki, and that he feels kind of guilty because of Yue.
Eeeeeeeeeeeeee for Kataang. Though it was kind of angsty, it was still beautiful. And OMG sexy!Katara lol.
I love how Sokka finally got to be shown in a smart light. Master plan!Sokka was awesome, and I love how he can be so silly yet so smart. And how both Katara, Aang and Toph (well, maybe not Toph) recognize this.