I am a recent and stoked Nikon convert!!
I am a very firm believer that a photographer makes an image much more than a camera - there are people out there who take awful images with the most expensive gear and others who manage to capture some amazing photographs with the most basic of cameras.
But I have to admit that I was very excited to be approached by Nikon to be an ambassador for their brand. The lenses are super-sharp and well, who would say no to shooting with a Nikon D3S? A very beautiful piece of gear indeed and without doubt the best camera I've used.