These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
YMMV: Buffy The Vampire Slayer S 6 E 19 Seeing Red
Alternative Character Interpretation: Spike's behavior. A lot of people call it his Moral Event Horizon, and he certainly saw it that way himself (hence his immediate search for redemption); others would grant him a "Get out of Jail Free" Card due to contextual factors not least of which is that some people feel that Buffy practically trained him not to take 'no' for an answer in their relationship (she certainly didn't herself, see episode Gone), and he wasn't operating from a full moral deck to begin with... they've as much as said that the soul acts as the conscience and those without it, no matter how good they might like to be, are trying to navigate without a working compass.
Tear Jerker: For sheer emotional value, this episode features one of the most brutal kills Joss Whedon's ever had.