Even Napoleon Dynamite himself was stumped by this very easy question about NBA legend LeBron James, as shown in Nation's Dumbest. Many may know Jon Heder from his role in the hit indie movie Napoleon Dynamite. More recently, he is a contestant on Nation's Dumbest, getting completely fooled on a question about NBA legend LeBron James. Who are Napoleon Dynamite star Jon Heder and LeBron James? He would later reprise the role in the animated Napoleon Dynamite series in 2012.