* The effects of the Klingon [[strike:disruptor]] ''rip-you-apart-from-the-inside-out-while-you-scream-in-agony'' beam are... pretty horrific.
* The Genesis planet tearing itself apart.
-->'''Kruge:''' Yes, exhilarating, isn't it?
* The sheer suddenness of David's death - along with a death rattle that seems to indicate he was stabbed ''in the throat''.
* The scene where [[spoiler:child!Spock turns into teen!Spock. Bones cracking, skin stretching, and screaming. Lots of screaming.]] And then, FridgeHorror sets in when you realize that[[spoiler:you heard that screaming before they came upon child!Spock.]]
* The most graphic depiction of disruptor disintegration Franchise/StarTrek had ever ([[{{Recap/StarTrekTheNextGenerationS3E22TheMostToys}} up to this point]]) shown. The victim grabs his head in agony as he falls back against his control console and is consumed by energy ''from the inside, out''.
* [=McCoy=] under the influence of Spock's katra, when you think about the implications. Especially the scene where Kirk finds him in Spock's quarters.
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