Harrison Ford on his first screen test.

The studio guy told me, "Kid, you have no future in this business." I said, "Why?" He said, "When Tony Curtis first walked onscreen carrying a bag of groceries -- a bag of groceries! -- you took one look at him and said, 'THAT'S a movie star!'" I said, "Weren't you supposed to say, 'That's a grocery delivery boy?'" Picked from IMDB.