Just a reminder, TechNet Webcast scheduled for today on Best Practices for Virtualizing Exchange.  Delivered by PMs, level 300, so this is not just a broad overview.  Worth checking out.  If you are on central time, this runs over your lunch hour.

http://blogs.technet.com/virtualization/archive/2009/10/27/upcoming-webcasts-on-best-practices-for-virtualizing-ms-server-applications.aspx