God I love the original Stsar Trek. Say what you will, but it's solid storytelling and blash blah hwo cares i won;'t be wswaying any opinions.
Remember when Sulu was slashing all over with the sword? Awesome, what a great idea. And then Spock did the thing and said 'Take D'artagnan here to sick bay.'
Spock! You rock!
And Spcok wept. This always crept me out, because as a kid, I didn;t want to see ANY grown man weep, much less a Vulcan. It was uncomfortable.
This episode left a lasting impression on me, as I always will remember the sight of the disease crawling up Sulu's arm. Ew.