Virtualize This!

I should drop a quick note about the 1.5 update of the free-as-in-open-source-and-beer virtual-computer application VirtualBox, now in revision 1.5.  I tried it out before as a possible replacement or parallel installation for VMware or Microsoft Virtual PC, and I ultimately wound up using it instead of either of those programs.  Version 1.5 sports some handy performance improvements, has guest additions for both Windows and Linux, and did I mention it doesn't cost anything?  (There's also a Mac OS X version in beta-test now, so you folks in Appleland can try it out shortly.)  Highly recommended.