Simple question: What are some scary episodes you like?

They don't necessarily need to be the "horror" episodes that Trek has done over the years. But, also, hey, if you love "Catspaw," no judgement. For example, I still find "The Best of Both Worlds" pretty dang scary. The sense of dread over a looming, unstoppable Borg apocalypse is still pretty chilling and thrilling stuff to me.

For individual moments, I think the best "jump scare" in the entire franchise is when Dr. Crusher finds herself surrounded by corpses that suddenly sit up in "Night Terrors."

Also, I think the body-horror aspects of "Threshold" actually work pretty well--the thunderingly dumb ending of the episode notwithstanding, I enjoy that one.

What are your favorites?