It’s time to vote for September’s Movie of the Month! The poll is at the bottom of the page, but first, the contenders! Gone With The Wind (1939) [Tiffany Brannan, Pure Entertainment Preservation Society] Mary Poppins (1964) [Doug Jamieson, The Jam Report] Big (1988) [Audrey Fox, 1001 Movies and Beyond] Showgirls (1995)…