Leonard McCoy is confronted with the unusual silicon-based Horta alien in "The Devil in the Dark" (1967), saying, "I'm a doctor, not a bricklayer." The line was used in "Terra Nova". Kelley himself parodied the phrase for a "Trivial Pursuit" commercial, in which the question is asked "How many chambers does a human heart have?" Kelley appears on screen and replies "How should I know? I'm an actor, not a doctor!". Leonard McCoy Dr. Leonard H. "Bones" McCoy is a character in the American science fiction franchise "Star Trek". First portrayed by DeForest Kelley in the , McCoy also appears in the
Star Trek II: The Wrath of Khan film in the "Star Trek" series, and is often credited with renewing substantial interest in the franchise. In the year 2285, Admiral James T. Kirk oversees a simulator session of Captain Spock's trainees. In the simulation, Lieutenant Saavik commands the starship on a rescue mission to save the crew of the damaged ship "Kobayashi Maru". When the "Enterprise" enters the Klingon Neutral Zone to reach the ship, it is attacked by Klingon cruisers and critically damaged. The simulation is a no-win scenario designed to test the character of Starfleet officers. Later, Dr. McCoy joins Kirk on his birthday; seeing Kirk