Comedian and political satirist Jon Stewart is shown in an image promoting the 78th Academy Awards in Hollywood, California in this February 27, 2006 file photograph. Stewart will host the 2008 Academy Awards, taking the stage for the second time, the Academy of Motion Picture Arts and Sciences said on September 12, 2007. The Oscars will be presented February 24, 2008. REUTERS/Sam Mircovich/Files (UNITED STATES)