premise: Leonard Nimoy is a documentary narrator.
hypothesis: Leonard Simon Nimoy ( [ ˈniːmɔɪ ] March 26 , 1931 -- February 27 , 2015 ) was an American actor , film director , photographer , author , singer and songwriter . After the original Star Trek series , Nimoy starred in Mission : Impossible for two seasons , hosted the documentary series In Search of ... , narrated Civilization IV , and made several well-received stage appearances .