I recently started playing around with OpenVZ, which is a lighweight virtualization engine for Linux. The OpenVZ developers must like what they see in the Sun niagra processor, since they are actively working to port OpenVZ to the niagra. This is great news, since OpenVZ has the most potential IMHO of all of the Linux vitualization technologies (e.g., Xen, KVM, etc.). Tis good stuff!