Yeah It is pritty cool.
http://img456.imageshack.us/img456/6186/picture1ne7.png
I just figured it out so my first attempt has some holes but I think I will be able to make it all black.
This style of stacking is 3 times closer than old close stacking and 5 times closer than coin close stacking.
Remember these are all yellow mats not black doormats.

