Besides Sharepoint SCOM can monitor IIS, SQL Server and Windows

http://blogs.msdn.com/sharepoint/archive/2007/12/10/announcing-new-system-center-operations-manager-2007-packs-for-wss-3-0-and-moss-2007.aspx
http://www.sharepointblogs.com/spfromscratch/archive/2008/08/29/moss-and-scom-2007.aspx