Bare Metal Recovery is System State on steroids. It's the same thing, except you can install Windows at the same time as the restore, instead of having to do it manually prior to the system state restore.
It is about using snapshots with virtual domain controllers, but it is the same idea.
Basically, never restore a domain controller unless *every* domain controller has been destroyed and you need to start building 1 new one. Otherwise, do a metadata cleanup, and dcpromo a new domain controller.
For inadvertent object deletions, use the AD Recycle Bin feature of Server 2008.
Michael D'Angelo (former)MVP-MIIS, Pace University Senior Systems Administrator (Windows)(MS)NMDANGE PhoeniX WorX Systems Administrator. If you play Total Annihilation, please join us. http://www.phoenixworx.org