Just was watching this one tonight and a previous episode was mentioned but I can't recall it. Was it the Devil in the Dark episode from season 1? Also the person filling in for McCoy in Sick Bay was he the same man from a season 2 episode about a computer that controls the enterprise? Bare with me as most episodes I have seen only once. After I finish season 3 I will go back and re-watch certain episodes. What would be your picks? I have a number of them from season 1 including the episode with the same machine from "whom gods destroy" and some from season 2 including Bread and Circuses, and the episode where Kirk and Spock are transported to a planet to investigate the disappearance of a historian.