In shopping around for a receiver for Christmas I listened to several Surround Sound demos at various stores, not serious audiophile stores mostly the Circuit City/BestBuys of the world. Most had poor auditioning areas, many did not even have rear speakers actually in the rear. I was surprised today to find a good demo area at Sams Club of all places. I stood on a line, pressed a large red button and the rear speakers (4 or 'em) moved out on a motorized frame and took position above and slightly behind me. The Bose demo then played various videos with audio designed to show off each speaker , including the sub-woofer. So, now I finally know what 5:1 is supposed to sound like. Should help in setting things up at Christmas.