Videos on SharePoint

Microsoft has published some new videos on SharePoint Server:

Solution architecture for SharePoint Technologies

Customizing and extending SharePoint Server 2007: appearance and data sources

Configuring the Business Data Catalog

Configuring Forms Services and Excel Services with Office SharePoint Server 2007

You may also find interesting to see:
Videos on SharePoint Desinger: http://manish-sharepoint.blogspot.com/2008/04/sharepoint-designer-videos.html
Developer Screen Cast: http://manish-sharepoint.blogspot.com/2008/04/developer-screen-casts.html
Demo on SharePoint: http://manish-sharepoint.blogspot.com/2008/10/demos-on-sharepoint.html