Huh, I didn't see Derpy in the second picture for the longest time. That was a really cool little insert. As for the episode as a whole, it was pretty good. Not my favorite season finale, but still pretty darn good. I like the song overload we got and I found the mane six trying to deal with each others cutie marks to be rather funny. Even the live action commercials weren't as painful as I thought they would be. They were still rather painful, but they were somewhat better than the ones during the royal wedding if only due to there being fewer of them. As for the whole alicorn deal. I don't really know what to say, it honestly seemed to me like they just tacked it on at the end. Though if there are more episodes about the transformation in season 4, as others have stated, then maybe it will fit better later. Not a big fan of how she looks either, though I'm not sure if that has something to do with her dress which I think looks kinda bad (especially when she faces the camera) or if it's just that she looks different and I'm not used to it. Ah well I'll just stay in "wait and see" mode and see where they take this next season.