Yup, I really enjoyed the Jeff/Dad stuff (thought it was ruined a bit by the fake heart attack, which I understand is a running gag in this show but still felt inappropriate during the scene) since I have some unaired stuff between me and my dad. I could totally feel what Jeff was feeling with how he yearned for a father to simply care for him, and would go to extreme lengths just to feel better (i.e. cutting himself to make it appear he had appendicitus) and finally telling his dad off. I honestly got teary eyed, and I don't think that's ever happened during a Community episode.
Surprise! Whole episode was homage to Fresh Prince of Bel-Air's "Why don't he love me man?"