The unprecedented social media push for Anchorman 2: The Legend Continues could provide a new template for movie marketing, Adweek reports. To promote the film, star Will Ferrell is appearing as Ron Burgundy in truck commercials, Huffington Post op-eds, online games, and a seemingly endless series of viral videos designed to court global audiences. (In one memorable clip, he shares his thoughts on the recent Australian elections.) The linchpin of the entire operation has been Tumblr, where GIFs are helping the movie to get widespread viral promotion. …