GR-Tek in Sydney did the awesome job of putting this rig together, I'm not going to pretend for a second that I could have done it myself, I was blown away by the build quality and time frame in which it arrived.
I'm using it for gaming (obviously) but also for video editing and from what I've thrown at it in the past week it is yet to break a sweat or even make any real noise. Tests I've been giving it are things like running Skyrim maxed out with high res texture mods at 2560x1440 and adding and manipulating effects in real time with 1080p video in Adobe Premiere Pro without needing to render footage whatsoever! (Anyone who has spent hours at 3am rendering footage while reading a book will understand how excited this makes me).
Case: NZXT Phantom Full Tower Black
PSU: Thermaltake TR2 Heavy Duty Low Noise 800W
Motherboard: ASRock Asus Z77 Extreme 4
CPU: Intel i7 3770k 8 core 3.5Ghz overclocked to 4.4Ghz
CPU Cooling: Corsair H80 Water Cooling
GPU: Palit nVidia Geforce GTX 680 2GB
Optical: LG Bluray Burner
Hard Drive: 240GB OCZ Agility SATAIII SSD + 2 x 2 TB Seagate SATAIII HDD
RAM: 32GB 1600 Mhz DDR 3 G.Skill
Monitor: Dell Ultrasharp U2711 27" @ 2560x1440
Keys: Razer Black Widow Mechanical
Mouse: Steel Series WoW MMO gaming mouse (2 years on, yet to have anything go wrong!)