One of the 'kids' got a new Imac recently. I've played with windows PC's for a number of years now but I was quite stunned by the Imac in as much that I have never seen a 'desktop' that was so clear or such a smooth rolling action when using the mouse. I had a look at the properties and the 'spec' is very similar to a c2d's except with mac os. Now I was wondering if this clarity was down to the 20'' monitor quality, the ATI grahics card or simply the Imac os.