At JavaOne, Vijay Sarathy of Sun talked with analyst Michael Cote of RedMonk about Sun xVM VirtualBox, a high performance, free and open source desktop virtualization software. xVM VirtualBox allows users to create “virtual machines” into which they can install whichever operating system they choose, so the same computer can run multiple operating systems and applications at the same time.
Below you'll see a video of Cote's talk with Vijay and a demo of VirtualBox in which Vijay creates a Vista instance and runs it on his Mac in a couple of minutes. You can check out all the features of VirtualBox 1.6 here and if you want to give xVM VirtualBox a try, you can download it here or here for no cost.
Sun xVM VirtualBox Overview - Part 1
Sun xVM VirtualBox Demo
End users like xVM VirtualBox because they can access their favorite
software using any operating system and developers like this hypervisor
because they can easily build, test and run cross-platform, multi-tier
applications on a single laptop or desktop computer. The latest version
of xVM VirtualBox supports all major host operating systems, including
Mac OS X, Linux, Windows, Solaris and OpenSolaris.
If you've any interest in standards and open source, one of the most
thought provoking topics in a long time (in my opinion) has been how to save your files in a way that you can access them in the years ahead.
Thanks to the Sun SPARC Enterprise M9000 server -- Sun will be included in the newest edition of the Guinness Book of World Records. 

