oldskoolboarder,

Here are my additional $0.02...

1) I second the suggestion of Black Hawk Down. Also, Air Force One is a good demo.

2) In the past I tried to further tweak what MCACC had given me. But I quickly gave up. It is darn hard to beat the MCACC. I would leave the surround parameters as it is. Others are right in saying that you should rarely be "aware of" the surround speakers in most movies. The movie makers certainly don't want to detract your attention from the screen during the movie.

3) Have you tried the "5-channel pink noise panning" test on the AVIA DVD (I think it is under the audio verification section)? If the "sound image" of pink noise slowly and seamlessly moves around you on this test, you can rest assured that your surrounds are setup correctly.

Incidentally, where exactly are your surrounds placed/mounted? Side walls/back wall/on stands? Height? Distances and direction from the listening position?