My favorite was the episode where Marshmallow sings to their parents. It was such a genuine and heartfelt moment, and I feel like there's very few shows (let alone cartoons) that can evoke that kind of emotion. Downright incredible, and this show just keeps getting better and better in my opinion. The music has always been good (in an often endearingly cheesy kind of way), but this moment just felt so real.

I have to imagine that the creators base much of the show off of their real world experiences. You just can't make some of that stuff up.