I've just finished marathoning the first 1.5 seasons (to the current cliffhanger/hiatus) of Gravity Falls, and strongly recommend it. Supernatural mystery/horror/comedy, significantly darker than Disney usually gets. High levels of continuity; very strong art direction; near-HPMOR levels of foreshadowing/conservation of detail (I advise not reading about it beforehand as there was a similar hivemind-predictive-success of the biggest twist). Secret codes, cryptic Reddit AMAs, trolling creators with hand puppets, all the good stuff.