My Little Pony: Friendship is Magic - 1x10 - Swarm of the Century

    Fluttershy runs into a tiny, cute creature (a colored sphere with eyes, a mouth, and wings).  It multiplies, and her friends adopt their own.  Then those ones multiply, and the whole episode turns into The Trouble with Tribbles.
    There are a lot of fun things in this episode.  Pinkie Pie gathers instruments, and pulls a pied piper to get rid of the infestation.  She's fantastic in that part - she looks really determined as she's playing a one-pony-band ensemble.  There's other fun though, the sense of menace that the creatures pose.  First, they eat all of the food they can find.  Then a spell makes them only eat non-food, which causes further destruction.
    My favorite moment is the last shot, when we get to see Pinkie play a short bit on the trombone.