Biography:​From Wikipedia, the free encyclopedia.   John Putch (born July 27, 1961) is an American actor, director and screenwriter. He is best known for his recurring role as Bob Morton on the 1980s sitcom One Day at a Time and as Sean Brody in the film Jaws 3-D. Description above from the Wikipedia article John Putch, licensed under CC-BY-SA, full list of contributors on Wikipedia.