Engadget has posted a must-read writeup on one of our favorite companies here at TUAW, Twelve South, the makers of the popular BookBook cases and the PlugBug power accessory for Apple devices. It's long, but it shows how Twelve South is a lesson in focused vision: Making really great high quality products for the Apple audience.
It doesn't hurt, of course, that Apple buyers tend to appreciate quality with their wallets, but Twelve South has carved out a really excellent niche for itself over the years.
It's also wild to hear the story behind the company: They nabbed a sales de