Write it down, put it in a labeled signed dated envelope (2 sigs required) and put it in the safe. That way when you get hit by a truck nobody has to try to crack your password safe...

There are also some neat appliances that will provide you or other admins with one time passwords for access to resources based on AD group membership - you need a key/password it gives you the current password, your time is up/ticket expires and the password is automatically changed. A little scary in some regards but a pretty neat idea.

Joe