For those of you that didn't get a chance to get out to SharePoint Saturday in Mississauga in December, I repeated the Extranet session in a webinar today. I've posted a PDF version of the deck. Look for the video shortly.
You can check out the other presentations and videos at http://bit.ly/spstoweb-assets. For details on the webinar series go to http://www.sharepointsaturday.org/toronto/default.aspx.