Great article from Technology Review (MIT) on Apple Design
(free registration required).
http://www.technologyreview.com/Biztech/18621/
[SNIPPET]
Through much of 1982 and into early 1983, Jobs searched for a sympathetic
design partner; he finally found one in Hartmut Esslinger of Frog Design.
Together, the two companies developed the "Snow White" design language that
was meant to give Apple's products a coherent visual vocabulary, the
appearance of being related.
That vocabulary featured, among other things, lines