Great build overall. Just need to replace 2 things:
1. SSD. I don't know much about Force GT, but a Samsung 830 or Crucial m4 would be a better choice because of the reliability.
2. Heatsink. A Cooler Master Hyper 212 EVO will save you some money, and it works really good.
For your DVD drive I would get a blu ray drive. That way you have the option of watching blu rays on your computer and won't have to worry about upgrading in the future. Also you can play CD, DVD and write CD DVD's depending on what model you get.
1) The GTX 680 is a hose job. That Gigabyte 670 down below will run head to head with that 680 and when over clocked will surpass the 680
2) I can think of a half dozen boards off the top of my head that will do everything the Sabertooth will do and just as good but for cheaper
3) The CM V6 is over priced. It wasn't that great of a cpu cooler when it was first released and it hasn't improved any with time.
4) Dual 670's or 680's is a lot of fire power for 1920 x 1080. If your seriously going to run two of those cards then anything less than a 120Hz monitor would be s total shame imo. Forget the 3D side, that's optional, it's the 120Hz refresh rate your looking for. It makes a noticeable difference.
5) That Sandisk SSD down below utilizes SF Toggle Nand which is about as good as it gets for SSD's these days in regards to speed and reliability.
6) Cases are a personal choice, but that Corsair down below has better airflow than that NZXT not to mention it comes with a built in multi channel fan controller and the option to add more fans. The 200mm side fan is nice ...slower RPM's which means better airflow for less noise. The LED's on there have an "on/off" switch.