I had wanted to do a Pinkie Pie story that delved into her personality, her history, and her talents. I also wanted to open up some of the potential that her talents gave her and see her do more, but when I got to the point where she actually starts to go down that path, I ran into a brick wall. I couldn't figure out how to make the story do what I wanted it to. Then came "Filli Vanilli", which has become my favorite episode of all. In analyzing it, I came to an interesting point of view on what took place there that melded perfectly with the story I was trying to tell. So a little rewrite, and here you have Filli Vanilli - behind the scenes.

A new danger threatens all of Equestria, and not even the Elements of Harmony are enough to stop it. See how one special pony got her cutie mark, as she tries to save her friends, her family, and all of Equestria.

Inspired by a few sources:
Great to Be Different
Luna's Reply
and a certain series of games, which I don't want to spoil the surprise.