"G.I. (Annoyed Grunt)", also known as "G.I. D'oh", is the fifth episode of the eighteenth season of the American animated television series The Simpsons. It first aired on the Fox network in the United States on November 12, 2006. It was written by Daniel Chun and directed by Nancy Kruse, while Kiefer Sutherland makes his first of two guest appearances this season. Maurice LaMarche does additional voices. In its original run, the episode received 11.43 million viewers. The episode is a critique of the U.S. military-industrial complex.