WSUS is free and easy to implement

If you run a Windows Server and manage Windows clients, why in the world would you not deploy Windows Server Update Services (WSUS)?  It's free.  It's simple to use.  It provides control over updates.  It provides reporting.

Chris Sanders has a well written FAQ on WSUS for those of you who haven't yet availed yourself of this great product.

Did I mention it's free and easy to use?