Just passing on something that hit my inbox today...
For a limited time, you can take Exam 70-659: MCTS: Windows Server 2008 R2, Server Virtualization, at no cost.
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For only $99, you can take an online training course and get a free exam voucher.
And on a related note, I just finished another round of exams, which I will write about once the MCP site details are updated.