I just ordered a new one. My current computer is ancient. This is what I bought:
Motherboard: Asus P8P67 PRO REV B3
Processor: Intel Core i5 2500K 3,3GHz + Cooler Master Hyper 212 Plus
Memory: Corsair 8GB (2x4096MB) 1600MHz XMS3
Hard drive: 120GB SSD Intel 510 + 1TB Hitachi Deskstar 7K1000.C
Video Card: Gigabyte GeForce GTX 560 Ti OC 1GB
Case: Fractal Design Define R3, Black + Corsair TX 650W V2 80+ Bronze
Fans: 2* Noctua NF-S12B FLX 120mm
Keyboard: Logitech Deluxe 250 Keyboard Black OEM
Mouse (from before): Mionix Saiph 1800