I have integrated Ubuntu Jaunty, Mac Tiger, Windows XP, and a MythTV PVR into my desktop environment using the default compiz in the Ubuntu repositories. Ubuntu is the host operating system, Mac Tiger is a VNC connection on the local network maximized to fullscreen, Windows XP is running in VirtualBox, and MythTV is capturing HD 720P via FireWire from my SA4250HD Optimum Cablebox.

Compiz Screen 4 Desktops - Ubuntu, Mac, Windows, MythTV

Compiz Screen 4 Desktops – Ubuntu, Mac, Windows, MythTV