There are interesting access-free resource documents, placed for the UKOLN Events, UK.
The presentations can be accessed through these links:
– UKOLN – UK Web Focus – Presentations – 2006 (Web 2.0 Focus)
– UKOLN – UK Web Focus – Presentations – 2005 (RSS Focus)
– UKOLN – UK Web Focus – Presentations – 2004 (New Web technologies)
There are about 50 presentations in HTML and ppt format.