The Pack, The Pack, The Pack!!!
I am a huge lover of animals, and the thought of those kids killing and eating that sweet little piglet just destroys me. Seriously, couldn't they have had him escape? We'd still get the point that they were possessed, loud and clear.
This same idea almost put me off Life Serial, (kitten poker), but there's so much that I love about the episode that I just fast-forward that scene, (which is hard since it's such a nice, twisted Spuffy date).
There are plenty of episodes which I find all-in-all to be subpar, but mostly I still adore them because in some way they push forward the story arc and contain some wonderful scenes. Examples are Beer Bad, Where the Wild Things Are, Puppet Show, I Robot...,Some Assembly Required,etc.