I absolutely love this episode! Of course, this may have something to do with the fact that I'm a huge Spock fan, and love to see him act more human, which is rare. But there are also a lot of other great things about this episode. It's really fun, although you should probably watch it twice if you want to experience the fun in the silliness as much as possible, since you're worrying too much the first time about whether they'll ever get out! And, of course, the show itself took great strides with the showing of the first inter-racial kiss, between William Shatner and Nichelle Nichols, not to mention the one shared by Leonard Nimoy and Majel Barrett! But that's really what Star Trek is all about, isn't it? "To go where no one has gone before' and in this episode, they did that with a lot of fun involved.