I just found a really cool feature in VMWare Workstation 6.5.3. It is called “Unity View” and basically allows windows from a virtual machine to appear as windows in the host machine.
In the example pictures you can see that I have a host running Windows 7, a unity windows from a Windows Xp guest and two windows from a Fedora guest (Picture 1). The best part is that you can actually see those windows in your taskbar and manipulate them as regular windows – you can use the Aero switch to switch between applications (Picture 2 & 3). However I found a minor bug, the Aero Peek feature in Windows 7 is not working with the unity windows.
Least but not last you get access to the start menu of the guests (Picture 4).