Brian K Seitz
Yes, We're in process of architecting/planning the upgrade to SharePoint 2010 for our division. Our group provides SharePoint services for multiple Fed components that have been traditionally silo'd. It becomes a question beyond just the technology and into governance of the information and processes.
While implementations can be problematic, its understand what you want that's the more difficult issue to settle. I'll be presenting on this topic at SharePoint Saturday San Diego Feb 26, then back to DC after several other presentations on the West Coast ending up on Microsoft Redmond Campus on the 6th.