A video showing "Mr Doodle" at the start of a 50-hour challenge to doodle all over a gallery in Carnaby Street, London.<br /><br />Mr Doodle has made a name for himself by covering the entire interiors of buildings with his distinctive doodles.<br /><br />This project, which is at the We Built This City Gallery, will raise money for The Teapot Trust, which uses art therapy to help children with chronic diseases.
