I'm doing an ECM Overview webcast today at 1pm PST. You can register at http://msevents.microsoft.com/CUI/EventDetail.aspx?EventID=1032318503&Culture=en-US . I was scheduled to do this a few weeks ago, but it was cancelled due to some sign-in challenges.
For those of you looking for a good webcast that provides an overview of WSS 3.0 and MOSS 2007, I did an overview webcast a few weeks ago that is available for replay at http://msevents.microsoft.com/CUI/EventDetail.aspx?EventID=1032317841&Culture=en-US. I did a lot of demos and spent 80-90 minutes walking through the functionality. Take a look and point folks interested in learning about SharePoint technology to it!
I was also recently interviewed by TechNet radio – it should be available in January.