To each thir own. Some may think the standard rectangle is triffe but in reality it has more options than this would. I still love the HL2 case made a while back:
http://www.gizmodo.com/archives/images/blackmesa_mod.jpg
Its rusty, broken down and the liquid cooling system glows a radioactive green thanks to a UV light and UV sensative liquid.
That or a case that is black with a nice amount of blue LED fans lighting the room and internals up. I love seeing inside my PC. Lets me see my awesome work being awesome.