For his latest installment of "ARTST TLK" on the Reserve Channel, Pharrell sits down with Leonard Nimoy, the man from whom he co-opted the Vulcan salute (a ubiquitous gesture during the rapper/producer's N.E.R.D. days). The lengthy one-on-one conversation includes a discussion on the origins of Mister Spock, the character Nimoy brought to life on the original Star Trek television series, as well as the development of the famed Vulcan salute. Nimoy also addresses the controversy surrounding his photography, and clarifies just what he meant in titling his memoir I Am Not Spock. Finally, he talks about reprising his most famous role for the new Star Trek films, and the advice he imparted to the new Spock, Zachary Quinto. Check out the interview below.