I finished doing Bertrand Benoit's Materialism study in Cycles a little while ago to better understand the make up of a realistic material and thought I would share some of the things I learned in case anyone else wanted to learn how to do it in Cycles as well.
If you would like to learn more, you can visit this blenderartists.org page: http://blenderartists.org/forum/showthread.php?356175-BBB3viz-Materialism-1-5-Rough-Metal-study-in-Cycles
Also, here is the link to the material study: http://bertrand-benoit.com/blog/2013/05/26/materialism-1-5-rough-metal/
