I know there's a lot more in the episode, but the scene that I'll always think of in reference to this episode is the car scene. It's probably my favorite scene in the whole anime.
Ed and Mustang have a meaningful talk about war, about what's important, and about Ed's decision to destory the Philosopher's Stone in order to save humanity.
After that scene, I felt like abandoning my fanfictions, feeling as though there was nothing more a person could say that wasn't already said. But, the feeling didn't stick after the next episodes. The end of the series and the movie made me feel as though there were still things I could write about.