This is an interesting paper on the loudness of movie soundtracks. We may soon see a reduction in the "reference level". http://www.dolby.com/tech/toolouds.pdf "Over the past few years, the subject of movies getting louder has generated increasing concern within the film production community. In addition, it has become commonplace for movie-goers to claim that movies are too loud. Many theaters now project films at an audio fader setting below the cablibration setting that would match that in the dubbing theater, presumably because of audience complaints." "The current situation is obviously unsatisfactory for audiences, theater operators, and mixers."