System Center Operations Manager 2007: Introduction - http://msevents.microsoft.com/CUI/WebCastEventDetails.aspx?EventID=1032343974&EventCategory=3&culture=en-US&CountryCode=US

System Center Operations Manager 2007: Advanced Topics - http://msevents.microsoft.com/CUI/WebCastEventDetails.aspx?EventID=1032343965&EventCategory=3&culture=en-US&CountryCode=US

Monitoring Web Applications with the MOM 2005 Web Sites and Services Management Pack - http://msevents.microsoft.com/CUI/WebCastEventDetails.aspx?EventID=1032325778&EventCategory=3&culture=en-US&CountryCode=US

Managing Exchange and Active Directory with Operations Manager - http://msevents.microsoft.com/CUI/WebCastEventDetails.aspx?EventID=1032305338&EventCategory=3&culture=en-US&CountryCode=US