I'm not an SLI user (yet), but isn't this new 180.48 driver's support for dual monitors with SLI a pretty big deal? I was under the impression that you couldn't previously do dual monitors with two video cards. From the nvidia site:
"Enables NVIDIA SLI Multi-monitor support, giving you the ability to use two monitors with your GeForce graphics cards in SLI mode. Now you can easily switch between multi-monitor desktop mode and full screen 3D gaming mode."