I don't like to niggle, but I don't care for that build. Oh, it's quite powerful, but is a lot more expensive than it needs to be.
CPU: Intel Core i7-3770K 3.5GHz Quad-Core Processor ($329.99 @ Newegg)
The i7 offers no advantage in games over the less expensive i5-3570K.
CPU Cooler: Cooler Master Hyper 212 EVO 82.9 CFM Sleeve Bearing CPU Cooler ($34.99 @ Newegg)
The Xigmatek Gaia was found at Frostytech to offer similar performance with less noise, and it costs less too ($20).
Motherboard: MSI Z77A-GD65 ATX LGA1155 Motherboard ($167.86 @ Newegg)
IMHO, Asus > ASRock = Gigabyte >>> MSI.
Memory: Corsair Vengeance LP 16GB (2 x 8GB) DDR3-1600 Memory ($66.99 @ Newegg)
More than needed. An 8GB kit is around $30 now.
Storage: Western Digital Caviar Black 1TB 3.5" 7200RPM Internal Hard Drive ($119.99 @ Newegg)
Good choice here; retains a five year warranty. Is this a CA price though? I see it as $110...
Storage: Crucial M4 128GB 2.5" Solid State Disk ($109.99 @ Newegg)
Also a good choice; avoid Sandfarce drives. The Samsung 830 is another good choice, if it's cheaper.
Video Card: EVGA GeForce GTX 670 4GB Video Card ($419.99 @ Newegg)
Nope. An HD7970 is < $400, and is a little stronger (although they do trade in some games). Also, its Compute capability is not crippled, unlike the nVidia offering.
Case: Cooler Master HAF 932 Advanced ATX Full Tower Case ($110.50 @ Newegg)
Too many better cases to list them all, but I'd go Fractal Design, Antec, or Rosewill, such as the Blackhawk for $90.
Power Supply: Corsair Professional Gold 850W 80 PLUS Gold Certified ATX12V / EPS12V Power Supply ($185.98 @ Newegg)
Nice PSU, but much bigger than needed. No more than 600W is needed; 750W only if you plan to run two graphics cards.
Optical Drive: Asus DRW-24B1ST/BLK/B/AS DVD/CD Writer ($19.99 @ Newegg)
Ok; one optical drive is much like another.
Optical Drive: Asus BC-12B1ST/BLK/B/AS Blu-Ray Reader, DVD/CD Writer ($59.99 @ Newegg)
Same, if you want Blu-Ray.
Monitor: Acer S231HLbid 23.0" Monitor ($159.99 @ Newegg)
Ok; that's a nice price for LED backlighting if you want a screen that large. FWIW, I prefer my 21.5" monitor to my 23" monitor.
Operating System: Microsoft Windows 7 Home Premium SP1 (OEM) (64-bit) ($99.99 @ Newegg)
There's a promo code for $20 off if you're on their mailing list (you have to be on their list for the code to work, so I didn't waste your time posting it).