Ok, here's a completely ridiculous build...
CPU: Intel Core i7-2600k
Mobo: Gigabyte Z68X-UD7
http://www.newegg.com/Product/ComboDealDetails.aspx?ItemList=Combo.717766
$644.98, $9.48 shipping
CPU Cooler: Noctua NH-D14
http://www.newegg.com/Product/Product.aspx?Item=N82E16835608018
$89.99, free shipping
RAM: 16GB G.Skill Ripjaws X 1866MHz C9 1.5v
http://www.newegg.com/Product/Product.aspx?Item=N82E16820231456
$169.99, free shipping
GPUs: 3x EVGA GeForce GTX 580 (Fermi) 3072MB
http://www.newegg.com/Product/Product.aspx?Item=N82E16814130655
$1769.97, $23.61 shipping
SSD: 256GB Crucial M4
http://www.newegg.com/Product/Product.aspx?Item=N82E16820148443
$405.99, free shipping
HDDs: 2x 1TB Samsung Spinpoint F3
http://www.newegg.com/Product/Product.aspx?Item=N82E16822152185
$119.98, free shipping
Optical: Lite-On 12X Blu-ray Burner with Blu-ray 3D feature
http://www.newegg.com/Product/Product.aspx?Item=N82E16827106346
$109.99, free shipping
PSU: Corsair AX1200
http://www.newegg.com/Product/Product.aspx?Item=N82E16817139014
$279.99 ($20 MIR available), free shipping
Case: Coolermaster HAF X
http://www.newegg.com/Product/Product.aspx?Item=N82E16811119225
$189.99 ($10 MIR available), free shipping
OS: Win 7 Home Premium 64-bit OEM
http://www.newegg.com/Product/Product.aspx?Item=N82E16832116986
$94.99, free shipping
Monitors: 3x ASUS VG236HE Black 23" 1920X1080 2ms Full HD 3D Widescreen LCD Monitor 400 cd/m2 100,000:1
http://www.newegg.com/Product/Product.aspx?Item=N82E16824236104
$1049.97, free shipping
3D Glasses: nVidia 3D Vision Wireless Glasses Kit
http://www.newegg.com/Product/Product.aspx?Item=N82E16814998052
$149.99, $6.98 shipping
Keyboard: Logitech G19 Gaming Keyboard
http://www.newegg.com/Product/Product.aspx?Item=N82E16823126053
$158.99, free shipping
Mouse: Logitech G9x Gaming Mouse
http://www.newegg.com/Product/Product.aspx?Item=N82E16826104261
$71.99, free shipping
Headset: Logitech G930 Wireless Headset
http://www.newegg.com/Product/Product.aspx?Item=N82E16826104399
$106.99, free shipping
Speakers: Logitech Z906 5.1
http://www.newegg.com/Product/Product.aspx?Item=N82E16836121050
$347.99, free shipping
Total:
$6080.83 shipped before rebates
Now, I said this is a ridiculous build. Let me explain. While you do have a ridiculous budget, you can build something that will do well with 3D surround gaming for about half of this (the actual computer, that is). While this would be about the best you can get right now, it will be surpassed by Ivy Bridge when that's released (early next year, I believe). Also, AMD and nVidia will be releasing their next-gen vid cards before long. But, I suppose with your budget, and what's left over, you can upgrade no problem.
😀
The peripherals are subjective. The best thing you can do is go to an electronics store and try them out for yourself.