I have been watching this thread for about 4 months...I finally decided to post my CM 690 mod. I have been waiting to clean up and mod this thing. It's just a basic mod inspired by the CM 690 owners here and another forum.
I love the black look of computer cases

I stripped it down and cut out the top and rear fan grills.
I saw a CM 690 with the fans cut in this thread. I did the same thing and cut the top off some Sycthe Ultra Kaze fans. That allowed me some extra room inside the case.
Here is a shot of the rear fan...I decided to mount it outside the case for even more room inside.
Here it is with the paint all dry and fans mounted.
Before the fans were almost resting on the V8...now I have some room to breathe.
I wanted to sleeve my cables. I have done this before and know what kind of time consuming headache it can be. I work a lot and have a family and no time...I used black electrical tape. Kinda silly but it actually works well.
Overall it was a day well spent...Thanks to everybody here for the ideas. Great thread...
****EDIT**** New mod late August 09
Cut the hard drive bay out and mounted the hard drives in the 5" drive bays.