It would be nice if you said a few things (since you're plannng for this to be a series) about DHCP in production environments. Typically I've seen DHCP used to handle desktops, but a lot of people are a bit wary of using it to assign IPs to production servers.
This leaves the problem of how to administer large production environments using DHCP. On the one hand, it's a hassle to assign IPs manually and on the other hand if the DHCP server goes down and someone tries to renew a lease, you lose a production system temporarily, and perhaps you lose more than one.
I know that failover and redundancy or on the horizon for ISC's dhcpd, but that's only part of the solution...