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 (film series) on the Admiral and lays a cunning and sinister trap. Both the first and second films have television versions with additional footage and alternate takes that affect the storyline. (Subsequent "Star Trek" films tended to have shorter television versions). Especially notable in "The Wrath of Khan" is the footage establishing that a young crew member who acts courageously and dies during an attack on the "Enterprise" is Scotty's nephew. When McCoy begins acting irrationally, Kirk learns that Spock, in his final moments, transferred his "katra", his living spirit, to the doctor. To save McCoy from emotional ruin, Kirk and crew