CHICAGO- June 11: John Waters and Robert K. Elder presented,'The film that changed my life: The Wizard of Oz.Waters is an American filmmaker, actor, stand-up comedian, writer, journalist, visual artist. Both are authors that signed their books after doing a Q&A onstage with the audience at the Music Box Theatre in Chicago Illinois on June 11,2011. (Photo credit mandatory Linda Matlow/PIxIntl)