Maybe I am just a weakling, but there were a few Trek episodes that I found disturbing and gave me the creeps.
Offhand I can think of 2 I will never forget...
Equilibrium DS9- The episode where Jadzia Dax has these creepy hallucinations of this blank masked person and this eerie music. She finds out that the Dax symbiont had another host Joran.
Schisms TNG-Crew members were having trouble with sleep and everyone had some strange things wrong with them medically. There was also some issues with things being out of time. They find out they were being abducted by aliens from some subspace domain and being experimented on. I do enjoy this episode though because of the "Ode to Spot" poem in the beginning.
Any episodes you all found disturbing or gave you the creeps?
Offhand I can think of 2 I will never forget...
Equilibrium DS9- The episode where Jadzia Dax has these creepy hallucinations of this blank masked person and this eerie music. She finds out that the Dax symbiont had another host Joran.
Schisms TNG-Crew members were having trouble with sleep and everyone had some strange things wrong with them medically. There was also some issues with things being out of time. They find out they were being abducted by aliens from some subspace domain and being experimented on. I do enjoy this episode though because of the "Ode to Spot" poem in the beginning.

Any episodes you all found disturbing or gave you the creeps?