Question: Who directed the film in which the actor best known for portraying Deke Slayton played a supporting role in 1982?
Sentence (from "David Della Rocco"): Della Rocco is a friend of "The Boondock Saints" writer and director Troy Duffy and his role was written specifically for him, playing a character also named David Della Rocco, bringing many of his real-life mannerisms and flair to the character, as well as the character's nickname, "The Funny Man".
Relevant evidence: No