One piece of the upcoming/new Windows Virtualization part of System Center is out the door.
To quote some marketing speak:
“Microsoft System Center Virtual Machine Manager 2007, part of the Microsoft System Center family of system management products, provides a simple and cost-effective solution for unified management of physical and virtual machines, consolidation of underutilized physical servers, and rapid provisioning of new virtual machines by leveraging the expertise and investments in Microsoft server technology”
Why I like it:
More like VMWare, less like Virtual PC.
The best part:
You can use it today.
You don't have to wait for Viridian / Hypervisor / Windows Server 2008.