Cinderella Man is a 2005 American biographical sports drama film by Ron Howard, titled after the nickname of world heavyweight boxing champion James J. Braddock and inspired by his life story. The film was produced by Howard, Penny Marshall, and Brian Grazer. Damon Runyon is credited for giving Braddock this nickname. Russell Crowe, Renée Zellweger and Paul Giamatti star. The film received generally positive reviews, and received three Academy Award nominations, including Best Supporting Actor for Giamatti.