Having used the Nikon D90 for a while now, it becomes obvious that this camera was designed by actual photographers, not just a design team.

The user interface, the ability to make your own menu of most used settings (takes a while but well worth the effort) the way it feels solid yet light, how comfortable it is in your hands and the easy access buttons all add up to a brilliant consumer grade dslr camera.

Here are some of the features that I think are the real pros of the Nikon D90 DSLR:

Well positioned buttons and chosen buttons within easy reach to control such things as ISO, white balance, auto focus, shooting mode etc… A high resolution 920 pixel screen that is incredibly clear and brilliant, you can see exactly what your shooting in various lighting conditions. The navigation is very well conceived. You can access all the important settings in just a few clicks.