I really like Batman: Dark Knight. Great video and audio quality. Recently, Knowing, by Nicolas Cage, has very impressive sound and nice picture. The train and plane crash sound is just jaw dropping. Another great video is the Curious Case of Benjamin Button, but not much sound effect.
The easy one to pick for both audio and video is Kill Bill volume 1.(blue ray)
The easy one to pick for both audio and video is Kill Bill volume 1.(blue ray)