It took me a bit of trying to find the right page with all the slide and demo content from PDC2005.
http://commnet.microsoftpdc.com/content/downloads.aspx is the quick link.
http://msdn.microsoft.com/events/pdc/ is the main PDC site.
I've added those links to http://robrelyea.com/events/pdc2005/ and I'm trying to have somebody make them a bit easier to find...