I have been looking at several solutions over the past few weeks for a virtual desktop manager.  As we are pushed to deliver more results with less it becomes very important to become very efficient.  Dexpot 1.4 helps deliver some of this improved efficiency.  With having different virtual desktops you can quickly change what hat you are wearing.  One thing I was a little skeptical about was how it would handle dual monitors, but this program did not skip a beat.

Dexpot 1.4

http://www.dexpot.de/index.php?lang=en