Shelby Fredrick "Sheb" Wooley (April 10, 1921 – September 16, 2003) was an American actor and singer. He recorded a series of novelty songs including the 1958 novelty song "The Purple People Eater" and under the name Ben Colder the #6 country hit "Almost Persuaded No. 2". He portrayed Cletus Summers, the principal of Hickory High School & 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 also had a co-starring role as scout Pete Nolan in the television series Rawhide. Wooley is also credited as the voice actor who produced the Wilhelm scream sound effect.