I got the chance to play BF2 and a few other games using a stereoscopic display setup and let me tell you, it was awesome. Stereoscopic designs use two monitors, half-mirrored glass and polarized glasses to produce a 3D effect in conjunction with nVidia's 3D stereo display drivers.

Rather than describe the configuration the above picture does a better job at explaining how to physically set it up.
The addition of real depth perception makes a huge difference. Lobbing grenades is easier, driving/flying is easier, sniping is easier and aiming in general seems to be easier or rather, much more natural. Player models stand out much better from the background than they did before as now you can correctly see the distance between them and the wall or objects behind them.
The games are also much more intense while being able to see missiles fly at you, smoke has more depth, and when playing games like Doom it is much more intense with monsters jumping at you in 3D.
In short, I'm building my own 3D setup. Have fun in the lame world of mock 3D gaming on a 2D monitor.