Yahoo! Movie News reports on some of the celebrity guest voices set to appear during the eighteenth season of the hit series The Simpsons, including Natalie Portman, Kiefer Sutherland, rock band The White Stripes, Dr. Phil McGraw (in a Treehouse of Horror episode), Joe Mantegna (“Fat Tony”), Joe Pantoliano, Michael Imperioli, Fran Drescher and comedian Richard Lewis. “The White Stripes voice themselves in the Sept. 17 episode when Bart organizes a benefit concert to repair his arm that was mangled by a tiger Lisa rescued from the local pound.” Unfortunately, there is still no more Troy McClure or Lionel Hutz. UPDATE: Metallica will appear in the season opener, set to air September 10.