Leonard Nimoy, Mr. Spock of 'Star Trek,' Dies at 83, Celebrities ReactLeonard Nimoy, Mr. Spock of 'Star Trek,' Dies at 83, Celebrities ReactLeonard Nimoy, who famously played Mr. Spock in the 1966 television series 'Star Trek' and then in film adaptations, passed away in Los Angeles on Friday (Feb. 27).Trent FitzgeraldTrent Fitzgerald