Virtualization SharePoint

Virtualization for SharePoint Server 2010
http://technet.microsoft.com/en-us/sharepoint/ff602849.aspx

Virtual Machine Guidance
http://technet.microsoft.com/en-us/library/ff621103.aspx

Plan virtual architectures
http://technet.microsoft.com/en-us/library/ff607811.aspx

Best practices for virtualization (SharePoint Server 2010)
http://technet.microsoft.com/en-us/library/hh295699.aspx

Best Practice Guide on Virtualiation
http://technet.microsoft.com/en-us/library/hh295699.aspx

Interesting Article on Issues with Virtualization
http://social.technet.microsoft.com/Forums/en-US/sharepoint2010setup/thread/e5abf633-9023-4f24-a707-2680cced28e8