Paul McGovern of Everything42 has written a very nice review of Creating Flow with OmniFocus.
McGovern covers any number of topics and has lately focused on Getting Things Done and its various tools. These topics have lately included Outlook 2011, the GTD methodology, and the program OmniFocus itself.
It’s great to see the positive feedback on the book. When a large project is in the works for over a year, the view of it can get fairly myopic without contact from the outside world.