Here is the new Active Directory Disaster Recovery Guide which has been updated to reflect new features and functionality you can leverage with 2008.
The following AD Forest Recovery Guides are available:
Best Practices: Active Directory Forest Recovery (W2K)
Planning for Active Directory Forest Recovery (W2K3)
Planning for Active Directory Forest Recovery (W2K8)
In particular it talks about;
1. Read Only Domain Controllers considerations for rebuild and recovery
2. Using Wbadmin
3. Global Catalog recovery considerations
4. Excellent Reference and FAQ section
This is a very welcome addition to th eportfolio of white papers and technical documents.