Leonard Nimoy played the role of the green-blooded vulcan Spock on "Star Trek" (1966-1969). After Star Trek's cancellation, he joined the cast of "Mission Impossible" in the role of the Amazing Paris, master of diguise. He replaced Martin Landau, the previous master of disguise, who ironically had originally been offered the role of Spock! Nimoy went on to host several other TV shows including "In Search Of..." and "Ancient Mysteries".