A group called World Ahead Publishing is offering a new take on firearm "buyback" programs by offering consumers a chance to exchange their Fahrenheit 9/11 DVD for a copy of the pro-Dubya book, Thank You, President Bush. The offer kicks in Oct. 5, when Michael Moore's incendiary flick arrives on DVD. In related news, folks who purchase Paris Hilton's new self-help tome, Confessions of an Heiress, can trade that in at any hospital for a CAT scan.