The BizTalk Server 2006 Best Practices Analyzer automatically examines a BizTalk Server 2006 deployment and generate a list of issues pertaining to best practices standards for BizTalk Server deployments. The primary use of this tool is to examine BizTalk Server production and staging environments, though it will still be useful on Dev machines.

You can donwload it at http://www.microsoft.com/downloads/details.aspx?FamilyId=DDA047E3-408E-48BA-83F9-F397226CD6D4&displaylang=en.