Curtis Armstrong (born November 27, 1953) is an American actor known for his portrayal as Booger in the Revenge of the Nerds movies, as Herbert Viola on Moonlighting, as Miles Dalby in Risky Business, as famed record producer Ahmet Ertegün in the film Ray and for voicing the titular character in the show Dan Vs. He is also the co-host of the TBS reality television competition series King of the Nerds, in addition to the role of Metatron in the series Supernatural.