What's New (July 9th, 2007)
• AdExplorer v1.0
We’re excited to announce the release of Sysinternals AD Explorer, a powerful Active Directory viewer and editor that includes advanced navigation and search features, plus an AD snapshot facility that enables off-line AD viewing and differential comparison.

http://www.microsoft.com/technet/sysinternals/utilities/adexplorer.mspx

I'm sure most Windows Admins already know and have known about these tools for years. If not well check em out. Most are pretty cool freebie tools (still free so far even though Microsoft bought them up)

http://www.microsoft.com/technet/sysinternals/default.mspx

AutoRuns is a nice tool to have as well.