I've always regarded Andy Hertzfeld as the quintessential Mac programmer. He was on the original Macintosh team back in the early 1980s, wrote much of the user interface code, wrote the first task-switching program, founded Radius, General Magic, and then later became involved in open source through a commpany he founded called Eazel.
To commemorate the 20th anniversary of the Mac, Hertzfeld created a collection of stories on the early days at Apple, which he published at www.folklore.com under a creative commons license. He also made the underlying software available under an open source license. For those who remember fondly the days of the early Mac it's exciting to relive those old days. The stories were later published by O'Reilly as the coffee table book called "Revolution in the Valley."
Robert X. Cringely does a great interview with Hertzfeld on NerdTV covering his history with Apple, working with Steve Jobs, the importance of open source, and how the code to MacPaint is getting open sourced. If you're into the Mac or want to get a perspective from a top notch developer, check out these links.