British graffiti artist and cult sensation Banksy will be heard speaking for the first time ever in a documentary to be played at the Sundance Film Festival today. “He started out by spraying his provocative images onto walls and under bridges in the middle of the night, leaving the public to puzzle over them in the morning. People liked his work so much that he began selling it at exhibitions, where he soon attracted celebrity buyers including Brad Pitt and Angelina Jolie. Then he published a book of his collected work, copies of which now adorn countless British coffee tables. Now, the graffiti artist Banksy is to take the commercialization of his street art to the next level, directing a feature-length film which will make its world premiere at the Sundance Film Festival on Sunday. The documentary film, Exit Through The Gift Shop, is being billed as ‘the world's first street art disaster movie’. It is directed by Banksy – whose true identity has long been a mystery – and narrated by the Welsh actor Rhys Ifans.”