Ever wonder how you patch boxes at an enterprise level effectively? 
Think you already know huh? Think your good at it too?

Well then, let's throw you into a scenario:

You are the head-honco C-level manager, responsible for nearly 90,000 users with more than 255,000 computers worldwide, spanning over 400 locations. Oh, did I mention that's 24/7 with tight SLA's?
Rethinking your battle plan now? 

So how are you going to ever get to go home?
Start by spending 5 minutes and see how the other pros do it at Microsoft: http://technet.microsoft.com/en-us/library/dd547402.aspx