59 Years Later, Leonard Nimoy’s Favorite Star Trek Episode Reveals a Whole New Spock

One of the reasons Star Trek: The Original Series is still revered today, 60 years after its premiere with "The Man Trap" on September 8, 1966, is its broad range of storylines. Episodes range from the comedy of "The Trouble with Tribbles" to the tragedy of "The City on the Edge of Forever," and all points in between. As such, there's a little something for everyone, an episode that one favors well above any other. Even the actors themselves have confessed to having favorites, and Leonard Nimoy's personal favorite, "This Side of Paradise," is one of the series' best episodes all around. And the reason why, as Spock would say, is logical.