Mark Metcalf was born on March 11, 1946 in Findlay, Ohio, USA as Mark Howes Metcalf. He is an actor and producer, known for Animal House (1978), Drive Me Crazy (1999) and The Stupids (1996). He was previously married to Elizabeth Wick. Had recurring roles as "The Maestro" on Seinfeld (1989) and "The Master" on Buffy the Vampire Slayer (1997). "Maestro" is Italian for "Master". Played the father in the intro to the Twisted Sister music video "We're Not Gonna Take It," reprising his sadistic, saliva-spraying ROTC "Neidermeyer" persona and line from Animal House (1978), "You're all worthless and weak!". Featured as a high school teacher in the Twisted Sister music video for "I Wanna Rock". Also reprising his mean persona, ironically the principal is played by Stephen Furst who was "Flounder" in the movie Animal House (1978). Lied about his ability to ride horses in order to get the role of Neidermeyer in Animal House (1978). After he got the part, he took horseback riding lessons. Appeared on television shows called "Angel," "Teen Angel," and "Touched by an Angel". Reviews movies for Milwaukee, Wisconsin morning radio program "Bob and Brian Show". [January 2005] Sold his interest in Libby Montana Restaurant to his former wife. [April 2008] Owns a Restaurant/Bar called "Libby Montana" in Mequon Wisconsin. Is incorrectly listed as the brother of Laurie Metcalf by some sources. They are not related. Is incorrectly listed as the brother of Laurie Metcalf by some sources. They are not related.