Photo Editor
Max:
For basic photo editing iPhoto is fine , if you want something more have a look at Adobe Photoshop Element 6 : Aperture 2 is fantastic stay clear of version 1 it was slow , Version 2 of Aperture is lightning fast and does everything you could want . Adobe Lightroom v 1.4, is Aperture's direct competition both are great programs . The King of photo editing is Photoshop CS3 a fantastic program but difficult to master .
It all comes down to what you want to do Nikon capture NX takes a novel approach to photo editing but is easy to work with .
All of the versions above have downloadable versions to try, and unlike a PC it does not matter how many programs you add or take off the Mac it will not phase it within reason. Keep an eye out for shareware programs as well there are some really great ones around .
If you are new to Macs try subscribing to Macformat from UK a great magazine and there are plenty of downloadable magazines using ZINIO reader and a subscription.