Coming late to this thread...
I'd definitely like to hang with the gang at Bell Labs who conceived and executed the Symposium on Auditory Perspective in 1933 (Fletcher, Snow, Wente, Thuras, etc.). These guys were truly venturing out into the great audio unknown, and their work formed the basis for multi-channel audio reproduction with a goal of reproducing sound that appears to exist in dimensional space. Here's the result of their work: (http://www.aes.org/aeshc/docs/bell.l...erspective.pdf). It's fascinating reading, and something everyone interested in audio reproduction should be familiar with.