Just a few comments in regards to Pullen's "Design Meets Disability". Until I read this article, I never thought about the history of eye glasses as being related to disability, though once it is pointed out, it is obvious. Over time I believe design for disability has improved leaps and bounds, though I do wonder whether the cost of manufacturing a functional, well designed tool for some disabilities affect the quality of its design and usability.
I remembered coming across this AMA on Reddit a few weeks ago with an amputee with a bionic hand. It was fascinating for me to read just how far development of bionic designs have come, but at the same time the cost of such development also took me by surprise. You can read more about it in the link below but the TL:DR; Bionic arm senses her muscles to flex, can read how she holds her feet that controls her grip and wrist movement (she was seen holding a bow and arrow). The cost of the bionic arm (she is given it by a research unit) costs on average $400,000.
As for the iPod...I think the original iPod is one of the best design products I've ever seen, mostly because of the tactile turn wheels. I am sad that with folks wanting more functionality the development is moving more towards the iPod touch territory (and of course they can sell that for more money). Most tech papers seem to believe Apple will phase out the classic iPod by the end of this year in favour for more glass surface procucts, which is a real shame.