The character continued to develop, with Nimoy creating the Vulcan salute during the filming of "Amok Time". This was based on a Jewish Kohen he had seen as a child. During the course of the season, a rift grew between Nimoy and Roddenberry and by the end of the year, they only spoke through formal letters. After the departure of producer Gene L. Coon and the stepping back of Roddenberry during the , Nimoy found that the writing of Spock deteriorated. In particular, he did not like the character being made a fool of during the episode "Spock's Brain". The interracial kiss between Kirk and Uhura in "Plato's Stepchildren" had been intended by the writers to be between Spock and Uhura, but Shatner persuaded them to change it. For his role as Spock, Leonard Nimoy was nominated three times Emmy Award for Outstanding Supporting Actor in a Drama Series, and is currently the only Star Trek actor to be nominated for an Emmy.