Leonard Nimoy created Spock, including the Vulcan salute, which he adapted from a Jewish priestly blessing he saw as a child, and the nerve pinch, which he invented to avoid a scripted punch.
He published a book called I Am Not Spock and then, twenty years later, one called I Am Spock, which is the whole relationship in two titles.
He directed Star Trek III and IV, the latter being the most commercially successful of the original-cast films, and also directed Three Men and a Baby.
He was a serious photographer, published poetry, and returned to the role in the rebooted films before his death in 2015.