This one needs to go full screen...there's a lot to look at (and wonder about) on this one....and it makes for a great desktop...interesting but not intrusive.
thanks for the comments, everyone--- if you're subscribed to the topic you'll see my answer right now. maybe i should do a tutorial on this? i created a grid as a layer in photoshop that was shaped like bricks, just the mortar lines, and applied some bevel/emboss and drop shadow to it, as well as clouds for some variance. the blue bricks are created by selecting the spaces in between the mortar lines and adding a layer that is the inverse of the original copper, plus a layer on top of that with some extra effects.