Out of every episode so far, I have to say that this was one of my favorite slice-of-life stories. The call backs were awesome (Matilda, the elderly pony with the bubble-pipe cutie mark, the buffalo partying with the ponies in Applioosa, the Smile Song, the photographs) and Cheese Sandwich was an excellent counterpart to Pinkie Pie. Having an episode as song-heavy as this was somewhat surprising (to me, at least) but very welcome. Also, Derpy drinking out of a chocolate fountain.