Creates an HTML Report showing Distribution and Dynamic Distribution Group Summary and Members

http://www.get-mailbox.org/downloads/32

Generate Mailbox Permission Report using Powershell (who has access to where )

http://www.get-mailbox.org/exchange-2010/generate-mailbox-permission-report-using-powershell/

Very happy to hear that...dont miss it :)

http://blogs.technet.com/b/exchange/archive/2012/03/06/mec-is-back.aspx