I received this email today from VMware:
Try out virtualization with VMware Server!
VMware Server is a free virtualization product for Windows and Linux servers with enterprise-class support. It enables companies to partition a physical server into multiple virtual machines and to start experiencing the benefits of virtualization.Â Also, by deploying VMware VirtualCenter, administrators gain centralized management to efficiently provision, monitor and manage their IT infrastructure.
You can learn more about VMware Server on the VMware web site.