Feel like you are living on an island when it comes to calendaring on OS X in a Company running Exchange?
Introducing Groupcal. Now you can take full advantage of the all the group calendaring features of Exchange directly from Apple iCal. Finally, view and share your calendar schedules quickly, easily, and transparently with your coworkers running Outlook. All with no need to install additional software on your Exchange server.
Groupcal for your calendars — Apple Mail for your Exchanged-based email ... the more "pure" OS X approach!