Whenever you introduce a new creature, you should be very specific in your descriptions so that players know if this is something for them to fight or have sex with.
Batman v. Superman Wasn't All Bad
It's not a good movie, but it was made with good intentions and if you look closely you can find a few interesting ideas.
Mass Effect Retrospective
A novel-sized analysis of the Mass Effect series that explains where it all went wrong. Spoiler: It was long before the ending.
Bethesda felt the need to jam a morality system into Fallout 3, and they blew it. Good and evil make no sense and the moral compass points sideways.
Push the Button!
Scenes from Half-Life 2:Episode 2, showing Gordon Freeman being a jerk.
A horrible, railroading, stupid, contrived, and painfully ill-conceived roleplaying campaign. All in good fun.