Moviegoers who tried to beat the heat by packing a matinee screening of The Dark Knight this weekend at the Park Slope Pavilion were sorely disappointed. Gowanus Lounge has some scuttlebutt from the Brooklynian message board, where a picture of oppressive, non-air conditioned hell has emerged: “It must have been 90 degrees in that hot box for the entire length of the movie. Everyone was sweating profusely and downing tons of water. Afterward a mob......