Shelby Fredrick Wooley (April 10, 1921 – September 16, 2003) was an American singer, songwriter, and actor. He recorded a series of novelty songs, including the 1958 hit rock-and-roll comedy single "The Purple People Eater", and under the name Ben Colder, the country hit "Almost Persuaded No. 2". As an actor, he portrayed Cletus Summers, the principal of Hickory High School and assistant coach in the 1986 film Hoosiers; Ben Miller, brother of Frank Miller in the film High Noon; Travis Cobb in The Outlaw Josey Wales; and scout Pete Nolan in the television series Rawhide. Wooley is also credited as the voice actor who provided the Wilhelm scream and all of the other stock sound effects for Thomas J. Valentino's Major record label during the 1940s.