Mine isn't anything so special to write about. Originally housed some old KT600-based Sempron, a 40GB and a 80GB HDD (Maxtor Fireball 3 and a Excelstor/Hitachi IIRC), some god-forbid-anyone-using-it awful LG drive and a utter crap noname PSU. Oh, and the front LEDs were originally blue/white with a switch to turn off the white ones.
Currently running on my main machine (i5 3470, GTX 650, 16GB RAM, 2x1TB, FSP Bluestorm II 500 PSU) and the leds have since been rewired - blue is the power LED and what used to be the white leds are now bright red leds for HDD activity.
Oh, and the silver DVDROM drive is actually an faceplate-swapped Samsung SH-224DB. I had a silver and a black faceplate for Samsung drives bundled in a car boot sale bought ASUS A7N8X-E Deluxe. Surprisingly, those fit like a glove on my SH-224DB which was originally black.
Then there's this old JNC/Deer case I had bought at a car boot sale as well. Used to be a low end Duron machine with a low end PSU to match as well (PREMIER LC-B350ATX of the worst kind.), now houses a rebuilt 500W Allied AL-8500BTX, an Core i3 540 and a nice red HD4850 512 with 2x WD Raptor 74GB (no, I ain't running them in RAID.) , a faceplate swapped LG DH40N SATA DVDRW and 3GB of RAM. Airflow isn't much of an issue though that's probably thanks to the sidepanel fan.
"Enter at your own peril, past the bolted door..."
Main PC: i5 3470, GB B75M-D3H, 16GB RAM, 2x1TB
98SE : P3 650, Soyo SY-6BA+IV, 384MB RAM, 80GB