When it came to fruits and vegetables, Mr. Napolitano was the real thing: He owned and ran a produce store in Bergenfield, in North Jersey, for many years. He became “Produce Pete” in the early 1990s, when he began appearing on the WNBC-TV news program “Weekend Today in New York,” delivering segments on Saturday mornings from the station’s Manhattan studio, as well as from farms, restaurants, pumpkin patches and corn fields.