For anyone interested in SQL Server there is loads of content available.
There is a new webcast next week for Data Mining add-ins for office 2007 see below. I have also provided links to all the previous SQL Webcasts. by subject area.
TechNet Webcast: Data Mining Add-ins for the 2007 Office System (Level 200)
Monday, November 27, 2006 - 9:30 AM - 10:30 AM Pacific Time
Jamie MacLennan, Development Manager, Microsoft Corporation
SQL Server Webcasts by subject area
SQL Server 2005 with Kimberly TrippOverviewAn Industry ViewExpress EditionHigh Availability/Disaster RecoveryIntegration ServicesInteroperabilityManagement ToolsSecurityStorageTroubleshooting and Performance TuningUpgrade/Migration