FOR 15 years he was the toast of the airwaves and the comedy circuit and was feted in Hollywood for movies including Forgetting Sarah Marshall and Get Him To The Greek. But Russell Brand’s increasingly bizarre conspiracy theories, online rants and political activism saw the former TV star go increasingly' off-grid'.... 9 The comedian became a Hollywood star in Forgetting Sarah Marshall, with Kristen Bell Credit: Rex 9 Russell in one of his controversial videos, Are We Being Silenced?... at the