How Would You Distribute Root Access?

dhanks asks: "I'm one of 10 administrators in our group. We're equally responsible for about 300 UNIX servers. We're having problems keeping track of all the root passwords and some of the administrators have taken it upon themselves to implement different security standards. (sudo with silly !SHELLS restrictions) How do other companies and system administrators handle the distribution of root access? I've been charged with coming up with a security policy and I would like to receive some feedback. I'm currently thinking of personal root accounts that would be locked via the /etc/passwd and would only be accessible via 'sudo su - adm_userid' that way each administrator may have full root access only using his regular user password instead of having to keep track of root passwords." While this is similar to an earlier question, this question deals with insuring authorized administrators have the access they need. How would you distribute root over hundreds of Unix machines to the administrators that need it?