Mononoke/YMMV

Anvilicious: The Zashiki-Warashi arc may not have been intended to be an anti-abortion Author Tract, but it sure is effective! Although the conflict arose from the fact that the abortions were done violently and without the mothers' consent, the anime does present the Mononoke as sentient fetuses wanting to be born. It's not clear whether the Mononoke arose from the aborted babies or the mothers, but keep in mind that it was based on Feudal folktales, which tend to look down on abortion or anything other than hetero-normative family units.
Awesome Art: Colourful + surreal + extremely stylized = beautiful
Crack Pairing: The Medicine Peddler x his own mononoke-slaying alter-ego has an entire Live Journal community devoted to it. Crack or Squick, take your pick!
High Octane Nightmare Fuel: A good part of the series if you're not careful.
Tear Jerker: LOADS. Every single arc has at least one if not more. Finding out the zashiki-warashi just wanted a mother to love it, Oyou's confession and subsequent self-sacrifice, Chou's mental breakdown.
This Is Your Premise on Drugs: Mushishi on crack. Lots and lots of it. And then a few dozen tabs of acid.