There is nothing not to love at Oobject's Guide to Anechoic Chamber Architecture. Above is AFJ International's tank-sized chamber, and the Auditory Localization Facility is a person-sized loudspeaker-filled geodesic sphere packing a generous punch of awesome. Less high-minded readers might also enjoy Nick Knight's rather splendid fashion/audio crossover The Sound of Clothes, which includes several not entirely SFW videos.
(Thanks, Will)