A person (or memory of a person) who is so famous in your organization or community, his/her name envokes a chorus of angels. Mention of his/her name brings men to remove thier hats and any request attached to his/her name is completed immediately. (Often no one really understands or can give a clear answer on why the remembered person is so great)
Originates from the film blazing saddles
Mayor: You'd do it for Clay Walker!
Crowd: (angels singing, men remove hats) Clay Walker! We'll do it!
Tom (in the crowd): Dangit, anytime the mayor wants something he Randolph Scott's us into going along with it.