Audio quality is excellent.
Dolby Digitall 5.1 with some nice use of surround and excellent bass. Great selection of extras including commentary, interviews, behind the scenes featurettes, music video, alternate title sequence and a parody with Ben Stiller from the MT movie awards. Also includes some fascinating looks at how they created many of the stunts. Then I noticed that John Woo was directing this new effort and my attitude about this new flick immediately improved. As I sit here typing, I feel as though I've watched a really good movie.