Thanks very much to all of you for your kind words on my image!
I worked very hard to get everything working the way I wanted, from the creature to the environment so it’s very rewarding to have such great feedback 
There is always room to improve, I had some ideas that would be nice to develop, mostly for the background, but due to time constraint I had to cut something… but overall I’m satisfied how the images turns out.
As far as breakdown or setup I used, I wrote a very long article (15 pages) on every aspect of this image creation process, from the sketching to the final render and it will be published on the December 2010 Issue of the 3D Creative Magazine; so if you are interested please give it a read because, besides technical aspects, I also wrote about my approach to the subject and the development of a creature from scratch so I think would be an interesting read.
Btw the render setup is very simple: 3 point lighting and SSS shader for the creature, phong for everything else 
If you want to know something more specific drop me a line by mail 
Thanks again to everyone!
Fede