I'm kinda thinking something like these only using the Mac Pro 2010 instead, with the red of the 5870 I think playing with some different colors someone with the right touch could really make it pop! 2560x1440 would be awesome
http://www.million-dollar-pc.com/systems-2011/reventon-mk2/039.htm
http://www.million-dollar-pc.com/systems-2009/murderbox/009/murderbox.htm
http://www.million-dollar-pc.com/systems-2011/reventon-mk2/039.htm
http://www.million-dollar-pc.com/systems-2009/murderbox/009/murderbox.htm