If you don't like the system Templar linked, here is a list of components.
$121.99 ASRock Z68 Extreme3 Gen3 LGA 1155 Intel Z68
http://www.newegg.com/Product/Produc...82E16813157271
$319.99 Intel Core i7-2600K Sandy Bridge 3.4GHz (3.8GHz Turbo Boost) LGA 1155 95W
http://www.newegg.com/Product/Produc...82E16819115070
$499.99 ASUS ENGTX580 DCII/2DIS/1536MD5 GeForce GTX 580 (Fermi) 1536MB 384-bit
http://www.newegg.com/Product/Produc...82E16814121429
$46.99 G.SKILL Ripjaws Series 8GB (2 x 4GB) 240-Pin DDR3 SDRAM DDR3 1600 (PC3 12800)
http://www.newegg.com/Product/Produc...82E16820231314
$89.99 OCZ ModXStream Pro 700W Modular High Performance Power Supply
http://www.newegg.com/Product/Produc...82E16817341018
$159.99 Corsair Graphite Series 600T CC600TM Mid-Tower
http://www.newegg.com/Product/Produc...82E16811139007
(Same case as above, the video on this case really impressed me. The filters rock!)
$89.99 Noctua NH-D14 120mm & 140mm SSO CPU Cooler
http://www.newegg.com/Product/Produc...82E16835608018
$79.99 ASUS Black 12X BD-R 2X BD-RE 16X DVD+R 12X DVD-RAM 8X BD-ROM 8MB Cache SATA Blu-ray Burner BW-12B1ST/BLK/G/AS
http://www.newegg.com/Product/Produc...82E16827135252
$89.99 Western Digital Caviar Blue WD5000AAKX 500GB 7200 RPM 16MB Cache
http://www.newegg.com/Product/Produc...82E16822136769
$199.99 Intel 320 Series SSDSA2CW120G3K5 2.5" 120GB SATA II MLC Internal Solid State Drive
http://www.newegg.com/Product/Produc...82E16820167050
Total:
$1,698.90
Switch out Video cards and add ram as you please. If I was buying today, this is what I'd most likely go with. The reason for the 580 and not the 7970 is that AMD does a terrible job keeping their drivers up to date with brand new releases. For example, their Skyrim driver was like 2 months late.
On the HDD choice, HDD's are still recovering from the price inflation. So I picked a cheapish one with decent size that should last until they get back to their normal prices.
*EDIT* There are 2 3GB EVGA GTX 580 cards that are slightly more expensive. But probably worth the extra performance, and EVGA has a 90 day upgrade program which may prove great with the looming release of the new nVidia cards. See later posts for more info on this.
2 more GTX 580 card choices:
$549.99 EVGA 03G-P3-1595-AR GeForce GTX 580 (Fermi) Classified ULTRA 3072MB 384-bit GDDR5
http://www.newegg.com/Product/Produc...82E16814130751
(This card is factory overclocked, with beefed up cooling.)
$529.99 (using a $20 Mail-in Rebate) EVGA 03G-P3-1584-AR GeForce GTX 580 (Fermi) 3GB 384-bit GDDR5
http://www.newegg.com/Product/Produc...82E16814130655
(This is only better if you know you will benefit from the mail-in rebate!)