​From Wikipedia, the free encyclopedia Danny Rubin (b. 1957) is an American screenwriter, actor, lecturer, celebrity blogger, and most notably the screenwriter of the modern classic Groundhog Day. The title of the movie has now entered the vernacular to describe the experience of a day or even a limited event repeating. Rubin received a B.A. in biology from Brown University and a M.A. in radio, television, and film from Northwestern University. He has taught screenwriting at numerous universiti...