Since people are getting new games and looking at a new PC, here is a my quick take on some options (newegg prices).

There is no extreme option (i7, top GPU etc, but the high option isn't far off that):

Budget
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Asus E35M1-M Pro Fusion
AMD Radeon HD 6310 graphics onboard
AMD E-350 APU 1.6ghz Dual Core
Kingston 4GB 1066 DDR3
Athena Power MicroATX Desktop Case 400W PSU
Western Digital Caviar Blue 500GB 7200 RPM SATA 3

$300

Mid
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ASUS P8Z68-V LX Intel Z68
Intel Core i3-2120 Sandy Bridge 3.3GHz 65W Dual-Core
MSI Radeon HD 6770 Twin Frozr II/OC 1GB 128-bit GDDR5 PCI-E 2.1
CORSAIR XMS3 4GB (2 x 2GB) DDR3 1333
CORSAIR Builder Series CX600 V2 600W PSU
SAMSUNG Spinpoint F3 1TB 7200 RPM SATA 3

$730

High
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ASUS P8Z68-V LX LGA 1155 Intel Z68
Intel Core i5-2500K Sandy Bridge 3.3GHz
Crucial Ballistix sport 8GB (2 x 4GB) DDR3 1600
MSI Radeon HD 6950 Twin Frozr III 1G/OC  
CORSAIR Gaming Series GS800 800W PSU
Corsair Force Series GT SSD 60GB SATA 3
SAMSUNG Spinpoint F3 1TB 7200 RPM SATA 3

$1170