'Tropic Thunder' Cast Hoping To Topple 'The Dark Knight' At The Box Office

LOS ANGELES, Calif. -- "The Dark Knight" has defended the top spot at the box office for a month straight, but its reign may come to a "Thunder"-ous end this weekend. Last week's opening of "Pineapple Express" failed to unseat the latest installment in the Batman franchise, but "Tropic Thunder," another R-rated action-comedy, could do the trick, members of the star-studded cast told Access Hollywood . (link)