If you're deploying Active Directory in a branch office environment (one or more central data centers and more than 100 branch offices with domain controllers), make sure to read the updated branch office guide. Version 1.1 has just been posted and contains some updated procedures and tools.

Here's a link:
  http://www.microsoft.com/downloads/details.aspx?FamilyID=9353a4f6-a8a8-40bb-9fa7-3a95c9540112&displaylang=en

Actually, even if you don't have a branch office deployment, you might find some useful things in the guide. Updated versions of dcdiag and repadmin are included as are scripts for an image-based deployment of domain controllers using ADS. Links to AD Management Pack for MOM and FRS monitoring tools are always helpful, too.