Michelle Williams currently stars in Oz the Great and Powerful, which is currently the top movie at the box office worldwide. In the film, Williams plays Glinda the Good Witch. Glinda is one of the most beloved characters in movie history. Since The Wizard of Oz which was released back in 1939, generations of young girls have loved the Glinda character. For many actresses, to take on a role such as Glinda has to be daunting, but Michelle Williams told us it wasn’t hard for her to play the iconic character.