Previously published in the July issue of TechNet Magazine, these are two PDFs of Windows 2008: Operating System components and Active Directory components. The posters explain how they work and detail capabilities.  They are great resources to have up on your office wall (you will need a big printer though).

http://www.microsoft.com/downloads/details.aspx?FamilyID=c2b9e44e-0bbd-47cb-bc09-b3d48be7f867&DisplayLang=en

The Feature Components poster highlights the following components of the Windows Server 2008 operating system:

Terminal Services
Network Access Protection
IIS 7.0
Server Manager
Server Backup
Server Core
BitLocker
Windows Server Virtualization

The Active Directory Poster highlights the following components of Active Directory in Win2008

AD Lightweight Directory Services
AD Federation Services
AD Rights Management Services
Group Policy
AD Management
AD Read-Only Domain Controllers

These are painstakingly created by two Microsoft employees in Australia, Martin and Astrid McClean. These two have been building these posters for years and they have all been great hits, usually causing multiple re-printings.

Great job once again.....