I found this very interesting video about a new Silverstone case TJ11. Its innovative because the motherboard is mounted at 90 degree angle on a removable tray. Hot air from the CPU and GPU flows up and out of the case. Below the mobo you have fans that help push that hot air out. Also you have bottom mounted power supply and hard drive cages on this giant of a case.
http://www.maximumpc.com/article/home/silverstones_latest_case_goes_11
The downside is that this case is very very expensive. Around 560 euros!
http://www.maximumpc.com/article/home/silverstones_latest_case_goes_11
The downside is that this case is very very expensive. Around 560 euros!