I think its great episode as we see some bonding time going on between Kirk, Spock & McCoy. Here you see how tight of friendship they all have. There was'nt always alot episodes with only them three as there were most of the time others in the landing party. So here you can see how they all come toghter to fight against those people who are trying to control them and force them to do things aganist thier will. And this also the first episode you see Kirk kissing Uhura which you never seen before as well. And you see almost the same thing in Star Trek XI only its Spock instead of Kirk, but pretty much the same.
"Out of the chair"-Spock