Long time MM fan here. I've rewatched Metamorphosis more times than I'd like to admit. While I think it's a great inspirational video, it's not my favorite MM episode, only because I'm a sucker for a long story I can invest in.
So what's your favorite MM episode? I think mine would have to be The Wanderer's Choice. It really was sort of like Inception, a story inside of a story, where we are having a story read to us while seeing Murdoch-Chan recovering from her battle with the Zog-Bots. The ending scene had so much weight and intensity, it managed to really drive home the dichotomy between the left and the right, and the utter futility of simply choosing one or the other. Also, the story had some very relatable elements. Hope we get more meme-war timeline continuations.
Let me know what your favorite episode is, and discuss why if you want.