A publicity image for "The Dark Knight" courtesy of Warner Bros. Pictures.(Xinhua/Reuters Photo)

Actor Christian Bale as Batman is shown in a scene from director Christopher Nolan's "The Dark Knight" in this undated publicity photo released to Reuters July 18, 2008. The film's robust performance in advance screenings bolstered projections that "Dark Knight" was headed for an opening weekend of $100 million or more in the United States and Canada.
(Xinhua/Reuters Photo)