He is attacked by spores and forced to fall in love with Jill Ireland, and is subjected to the ignominious ritual pon farr as Gene Roddenberry tries to invent a reason why purely rational beings might be forced to have sex.
The first single, Pon de Replay, eventually climbed to number two on the US and UK charts, and was also a huge hit in Japan.
Unfortunately, part of the mating ritual involves Spock suffering from a condition known as Pon farr, in which the male Vulcan must "mate or die."