Oh, M.A. Larson, you magnificent bastard. I mean, you're an infamous troll of the fans, but you managed to make the 100th episode a glorious casserole of ascended memes, jokes, and background gags. It's just a pity they couldn't get David Tennant to voice Doctor Hooves.
But we did gets lots of Derpy, Lyra x Bonbon confirmed (and a Bon Identity, no less), Octavia and Vinyl Hooves are housemates and jam together, a panda gets thrown, a shark gets jumped, another monster that's exactly what it says on the tin, and so much more. And a really nice Aesop.
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Arrangement by Tina Guo, who calls it "Electric Cello Dubstep"
It made me grin like a loon If there aren't a thousand fanfics inspired and jossed by this episode I'll eat my hat.