I was quite pleased with how this one came out :)  I was trying some new methods of doing gray shading, and they worked out well.  I was also attempting to do a nice looking background that was simple to do, yet didn't look all that simple.  After thinking about it for awhile, I came up with a few ideas that I tried out for the first time in this one towards that end.  Basically I just broke the background up into simple shapes that interlocked in such a way to give it a more complex look than the effort that went into it.