If you have not happened across the blog NWAVGUY I highly recommend a gander. Using state-of-the-art test gear (including the yummy Prism Dscope III), he shreds audio BS seen elsewhere with cold hard science and facts. My kind of blog!
AMB Mini3 DIY Headphone Amp is a great place to start. Watch the reaction of the foamers to cold hard facts and measurements. Sound familiar to that of non-glowing PC game reviews/previews/skepticism?