Clint has a good one in his downloadable shaders. Mirrors, like reflecting water, look best when you map or create a gradient blend for a background. (which can be different than the backdrop which shows up when you render) For example, that Waterglobe shader that is available in the free download section looks pretty mediocre unless you have a bigradient background which causes it to becomes luminous. Any time I create scenes that have a highly reflective surface I'll also position light and dark elements out of the camera view that cast reflections onto the object. (Check out the 'mixmaster' in the gallery section. Without white 'reflectors' the object would have been gray on all up facing surfaces.) Hope that this helps. Mark