You can always do 3D with a Single Monitor/TV as long as it either comes with it's own glasses or you get the 3d Vision for it. Either way it has to be 3D enabled.
I thought about the surround 3D, but for 900$ which is the cheapest for three 23" 3D screens.
I could get a nice 42-55" 3D Plasma/LED for about 800-900$
This would be ideal for gaming and movies. 3D on computer monitors seems kind of lame, when you can have it on a huge 42"+!
The Nvidia Vision 2 is coming, i would wait on a 3D monitor to try and get a lower price!