From Wikipedia, the free encyclopedia Justine Tanya Bateman (born February 19, 1966) is an American actress, writer, and producer. She is best known for her regular role as Mallory Keaton on the sitcom Family Ties (from 1982 until 1989). She currently runs a production and consulting company, SECTION 5. Description above from the Wikipedia article Justine Bateman, licensed under CC-BY-SA, full list of contributors on Wikipedia.