Variety reports three more actors have joined the cast of “Saving Mr. Banks”, an upcoming Disney film that focuses on the 14-year battle for Walt Disney to get the rights to P.L. Travers’ book Mary Poppins. The new actors include Paul Giamatti, Ruth Wilson and Jason Schwartzman who will play Robert Sherman. Tom Hanks is set to play Walt Disney and Emma Thompson will play P.L. Travers.