With the latest release of Chrome OS, you can run dual monitors. It's just what I've been waiting for. I have a monitor mounted to my wall that sits over my desk and it will be really nice to have my real work on there and I can video chat from the chromebook screen.
If you need to configure the position of your second monitor, just click the status area (with battery & wireless info), then click the name of the monitor and you'll be able to adjust. Super simple. Chromebooks just keep getting better & better.