Derrick Story has an article on the O'Reilly Network (highly viewed by tech/computer geeks) entitled "Why We've Embraced Mac OS X". A few key items from the article:
"This new OS has accomplished in a short period of time what others have struggled to do for years: bring a compelling, widely accepted GUI (called Aqua) to Unix.
Oddly enough, Mac OS X is more popular in the open source community than it is in Apple's traditional customer base, many of whom dislike it and are rebelling against the change. But there are lots, and I mean great numbers, of technically-minded people who love this new operating system.
If you've been less than enthusiastic about Apple technologies in the past, I'm asking you to take a second look. There's an opportunity here for us to take back control of our computers, and at the same time, enjoy some of the luxuries of GUI applications.
I believe that Mac OS X should be a full-fledged member of the O'Reilly community. It has the strengths we value in a technology."