IMO, the single worst episode of both TOS and probably all of Star Trek has got to be "The Galileo Seven". I cannot emphasize enough how much this episode appalls and angers me, on so many levels.
The episode was clearly written by someone who had absolutely NO grasp whatsoever of how a military or even quasi-military unit is supposed to function. The level of utter disrespect that Spock is bombarded with in the episode just infuriates me to no end.
The crew of the Galileo was in a crisis situation. Spock was the commanding officer charged with their safety. Yet at every turn, every single male junior officer blatantly defies Spock's authority, and even blows off what Spock tells them. And if this were not bad enough...
Doctor McCoy, who is a SENIOR officer, and obviously, ought know better, JOINS the younger men in taunting and defying Sock and his authority! I mean, c'mon... give me a freaking break! A SENIOR officer acting in that manner to his commanding officer?
The only two people who acted with any level of professionalism were Scotty and the female officer. Poor Scotty even defended Spock finally! I seriously hate... yes hate this episode. It was beyond poor writing, a poor depiction of a command unit, and a poor portrayal of what Gene Roddenberry wanted humans to be.
If I had written the episode, as soon as Spock was back on the Enterprise, the careers of every male junior officer left would have been OVER. Period... just like that, over, the moment they set foot in the shuttlebay. I would have had the security men take them into custody for insubordination and disobeying a superior officer. Also, I would have made a formal complaint to Captain Kirk about the conduct of Doctor McCoy, and demanded that an official reprimand appear in/on his Starfleet record, as a result of it. Seriously.
Man, this episode infuriates me... even posting about it now, I'm getting angry, lol. This was truly the worst of Trek, and IMO, a horrible attempt at writing.