I tried to collate the list of office 365 webcasts that are published this month (July 2011). They are listed below:-

Office 365 Jump Start: Microsoft Office 365 Overview for IT Pros

http://technet.microsoft.com/en-us/edge/video/office-365-jump-start-01-microsoft-office-365-overview-for-it-pros

Office 365 Jump Start: SharePoint Online Overview

http://technet.microsoft.com/en-us/edge/office-365-jump-start-12-sharepoint-online-overview

Office 365 Jump Start: SharePoint Online Administration

http://technet.microsoft.com/en-us/edge/office-365-jump-start-13-sharepoint-online-administration

Office 365 Jump Start: SharePoint Online Extensibility & Customization

http://technet.microsoft.com/en-us/edge/ce-365-jump-start-14-sharepoint-online-extensibility-customization

How Microsoft IT does Business Intelligence

http://blogs.technet.com/b/tothesharepoint/archive/2011/06/06/how-does-microsoft-do-bi.aspx