I have spent the entire weekend immersed in 5.1 after buying a modest sound card and playing the King Crimson and Jethro Tull discs I own but have never heard. I'm blown away -- why didn't I do this years ago?? I know there are lists of good 5.1 mixes, but what's the single best disc or track to put on to impress visitors? It should be immediately impressive, not subtle -- even though I like subtle myself, this is for a quick demo. So far I think it's something from King Crimson's Discipline, probably the title track or Frame by Frame. Suggestions? Thanks in advance.