If you are into Virtualization, then check out the newly released VirtualBox from Innotek.
From using it so far, this seems very fast compared to the other offerings out there.
A bit basic as regards to settings and some bugs, but it is open source and will be worked on and updated a lot over the months for sure.
Available for Windows, Linux and soon a Mac OSX Intel version.
Well worth a try and shall be a intresting year this one for virtualization, and we have yet to see how Microsofts Hypervisor
will shake out against some pretty good solutions already, when they get around to releasing there Beta at long last , which should be soon I hear.
For now pop over to Virtualbox and give there great product a check out on there website