My unRAID build from 12 months ago (yes, I am THAT lazy it takes me a year to upload the photos).
It all started with "does anyone want these? i'm going to throw them out.." I couldn't resist.
About a month and a half of casual modifying and more kebabs and beer than you can poke a stick at..
Before:

After:

Before:

After Painting:

After Painting + Parts:

Specs:
OS at time of building: unRAID Pro v4.6 rc2 (now 4.7)
CPU: Intel Core i3 540 (3.06GHz Dual Core)
Motherboard: Gigabyte H57M-USB3
RAM: 2GB DDR3 1333Mhz Kingmax
Case: Custom Modified Full Tower
Drive Cage(s): 5x Welland ME-751 3.5" SATA Trayless Racks
Power Supply: Corsair VX550W 80 Plus
SATA Expansion Card(s): Nil
Cables: 10x 90cm Right Angled SATA Cables
Fans: Stock CPU Cooler, 2x 120mm CM Intake, 2x 92mm Antec Exhaust, 1x 120mm PSU Exhaust
Other: Deepcool Rockman 3.5" Bay Controller & Epic Smiley Badge
Parity Drive: 2TB Seagate Barracuda LP
Data Drives: 5x 2TB Seagate Barracuda LP, 1x Western Digital GP
Cache Drive: 1x 150GB Western Digital Raptor 10K RPM
Total Drive Capacity: Raw 11TB, Redundant 9TB, Formatted 8.17TB
Primary Use: Media & Backup Server
Likes: Custom modified makes it unique and "my own." Sound proofing makes it VERY quiet.
Dislikes: Internal drives not easily removed, next time will use more mobile racks. Wheels are terrible on carpet. Server is "Top Heavy" :-P
Add Ons Used: Nil
Future Plans: 1x Adaptec Raid 1430SA PCI-E, more drives, eventually a new case
Power Usage: Not much, although my home energy monitor is too inaccurate to post numbers.
Modifications Made:- Replaced top drive cage with a better one
- Upgraded top exhaust fans from 2x80mm to 2x92mm
- Added 2x120mm intake fans (previously none)
- Cut out much larger intake on the bottom of the front panel
- Replaced rear slot covers with black vented ones
- Cutout motherboard tray for cable management
- Polished and installed custom hard drive rails (inspired by bjp999 - thanks!)
- Removed feet and replaced with wheels
- Bogged up front reset switch, power & HDD LEDs
- Spray painted everything black
- Installed sound deadening to top, front, bottom, middle and side panels
- Installed 5x Welland Trayless HDD Racks
- Other minor cuts/modifications to make stuff "fit"
- Increased total drive support from ~6 drives to 17 :-)
I only ended up using one box but i figured if we cut something we shouldn't at least we would have a "spare" from the other case.
LOTS of photos of the whole build but I havent bothered uploading the whole log here. Let me know if you want any more pics :-)
92mm Fans (Test fit over where the 80mm fans used to sit.. they barely fit):

92mm Fans mounted & exhausting right off drives:

92mm Fans (Rear):

120mm front fans & drives mounted:

WebUI:

Shares:
26/06/12 Edit: Fixed broken image links & added some new images28/06/12 Edit: Removed 5x2TB image as already posted below (didn't notice) - Will fix other doubles and add more photos when i get more time