Here's a pretty cool application from Australia. It doesn't beat having multiple monitors on your desk, but it does make it possible to have individual workspaces that are optimized for particular tasks.
A review will be on the 25 July 2010 edition of TechByter Worldwide.
This video is a bit shakey. I think that's because it's actually been downsampled three times: Once when Screencast-O-Matic created the downloadable file, again when I exported the video from Adobe Premiere to an MP4 format, and finally when Vimeo crunched it to fit.