Active Directory Explorer v1.0
Ok there's LDAP Browser and ADSIEdit but this new util from sysinternals is teensy (160K after UPX), runs from a penstick, doesn't need you to fiddle with scary things in order to view the entire schema, presents many of the types in human readable form, you can edit things and it *takes and compares AD snapshots*. Can't see me using the latter very often but when/if I do it will be incredibly useful.
Hmm.. on second thoughts I'm too hung up on comparing. "Send me a snapshot of your AD & I'll take a look" will be handy.
Re: Active Directory Explorer v1.0
Looks rather handy - one for my admin desktop I think.........