Curtis Armstrong (born November 27, 1953) is an American actor and singer best known for playing the role of Booger in the Revenge of the Nerds films, Herbert Viola on the TV series Moonlighting, Miles Dalby in the film Risky Business, and record producer Ahmet Ertegun in the film Ray as well as for playing the role of Metatron on the TV series Supernatural. He is also known for providing his voice for such characters as Schmuley "Snot" Lonstein on the animated TV series American Dad! and Maru in the animated film Planes: Fire & Rescue in addition to portraying the title character on the animated TV series Dan Vs., Mr. Moleguaco in The Emperor's New School, Ezekiel the Cockroach on Doom Patrol, and Robot Default on Robot and Monster. From 2013 to 2015, he served as the co-host of the TBS reality television competition series King of the Nerds. Personal life Armstrong was born in Detroit, Michigan, the son of Norma E. Armstrong (née D'Amico), a teacher of Italian (Abruzzese) descent, and Robert Leroy Armstrong. During his childhood, he lived in Switzerland for a few years while his father worked there. His family returned to Michigan, and he graduated from Berkley High School in Berkley, Michigan Armstrong attended Western Michigan University and later transferred to the Academy of Dramatic Art at Oakland University in Rochester, Michigan, graduating in 1975. Armstrong had a Catholic upbringing; he later converted to Judaism when he married Elaine Aronson. His daughter Lily Armstrong was born in 1996. Armstrong announced via social media that his father died on May 25, 2020, of COVID-19. Career His first role came in the 1983 film Risky Business. However, he is best known for his role of Booger in Revenge of the Nerds, reprising the role in the sequels Revenge of the Nerds II: Nerds in Paradise, Revenge of the Nerds III: The Next Generation, and Revenge of the Nerds IV: Nerds in Love. Armstrong's typecasting in the role was mocked in The Simpsons episode "E-I-E-I-(Annoyed Grunt)". His other films include Better Off Dead, Big Bully, One Crazy Summer, Bad Medicine, National Lampoon's Van Wilder, Smokin' Aces, DodgeBall: A True Underdog Story, Jingle All The Way, Southland Tales, and Beer for My Horses. He also had a recurring role as Herbert Viola on the television series Moonlighting, and played the part of Ahmet Ertegun in the biographical film Ray