Purchased new in Fall 2006 and used for video editing, sound production, web development, photo retouching. Powerful Quad Core 2.5 GHz PowerMac- the last and most powerful of Apple's PowerPC machines. I have had zero problems with this machine and its been in my home office in a 100% smoke free environment since I bought it.
I use both the Mac and PC platforms and am replacing this machine and a dedicated PC with a new Mac Pro.
Quick specs:
* 7.5 GB DDR2 RAM (ECC- error correcting)
* 250 GB HDD & 500 GB HDD
* nVideo GeForce 6600 (256 MB)
* 16x DVD-DL Superdrive
* Liquid Cooled
* Optical Audio I/O
* Firewire 800 and 400
* Apple Keyboard
* Apple Mighty Mouse
* Original Box
* All original Apple OS disks and manuals included
* Leopard discs included
* Loaded with software
Images below. More can be found
here.
Asking $1000 shipped FedEx Ground in its original box/packaging. 
