Cheers to Gregm, a voice of reason.
To those debating multi-channel and 2-channel, would it not depend entirely on the recording anyway? If I have a piano and a cello playing in a small room similar to the one I sit in, the instruments resemble the point sources of my speakers, in which case, if the recording is close-miked, my listening point in my room will resemble the place I might sit in the room with live music. In which case the reflections of the performance room match those in my room, which means I have duplicated the live experience quite faithfully using a two-channel set-up. And if my room is bad, then I have listened to a stellar live performance in a really bad venue, I won't necessarily do much better with the same thing in my room.
By the same token, I like the concept of multi-channel for the idea that reproduction of the ambient reflections offers spatial cues to give you a "you are there" feeling. That said, it would obviously work best on recordings where there is non-negligible ambient/reflective sound, and is probably best reproduced listening nearfield in an anechoic chamber. As I am neither convinced that most 2-channel recordings contain equal ambient cues, nor do I happen to have an anechoic chamber at home, I will stick with my humble 2-channel digital and analog system which pleases me just fine... though I am sure I could use some bass traps... :^)