Spock was the only Vulcan to appear on Star Trek: The Original Series until the first episode of the second season, "Amok Time." "Amok Time" also offers the first look at the planet Vulcan ...

The hand signal actually made its first appearance in the Season 2 opener, "Amok Time," in which Spock ultimately learned his fiancé, T'Pring, had found another lover. The moment in the episode ...