Sony Pictures Imageworks' Rob Legato has been named the CGI supervisor for Warner Bros.' HARRY POTTER AND THE SORCERER'S STONE. Legatos credits include TITANIC for Digital Domain and the upcoming WHAT LIES BENEATH for SPI. The flick, set to bow in November 2001, is being produced by David Heyman and directed by Chris Columbus. The cast includes Maggie Smith, Tim Roth and Robbie Coltrane. Based on the best-selling book by J.K. Rowling, the film version will be an effects extravaganza with flying broomsticks and an all-CGI villain Voldemort.