Mark Metcalf is best known for his role as the sadistic ROTC officer Douglas C. Neidermeyer in the 1978 comedy Animal House. He is also known for playing the role of “The Maestro” on the hit sitcom Seinfeld as well as for his recurring role as “The Master” on the television series Buffy the Vampire Slayer. Mark's life story is as large as the characters he portrays.