Remember when we told you [tag]Jack White[/tag] was going to act in a new movie soon? Well that movie is none other then Walk Hard: The Dewey Cox Story a clear spoof of the [tag]Johnny Cash[/tag] biopic Walk The Line, staring John C. Reilley as Dewey Cox, a man on a mission: to become a musical legend. The movie also features Paul Rudd as John Lennon, Jack Black as Paul McCartney and of course Jack…