Starz Digital gave an exclusive one-theater run to The Family Fang, Jason Bateman's second feature directorial, starring Christopher Walken, Nicole Kidman and Bateman himself over the weekend. The title had a decent start ahead of its expansion into 40 markets and VOD this coming week. Fang bit off the weekend's highest per theater average among the Specialty newcomers, edging out IFC Films' The Man Who Knew Infinity starring Jeremy Irons and Dev Patel, which played a…