Catherine was the highlight of the episode for me. I wasn't a gigantic fan of hers in the past, but here she seemed so much more engaged and aware of what was going on. That "pep-talk", oh man was that cathartic, but most of all I loved how it ended with her embracing her mother's massive ambition. And then Selina's rebuttal of "I'm not a bitch and you look like a waiter." Perfection. Their dynamic was amazing this episode.
And then, of course, Goober Peas. I knew someone was going to walk in on them, but that didn't stop me from howling when it actually happened!