I often use Teacher Tube and You Tube for tutorials in my role as ICTPD facilitator. It is often useful to get the latest 'how to' instructions for new Web2.0 tools. The Medieval IT Helpdesk is a classic and I've used it in my training sessions. It's great to find Rachel Boyd's TeacherTube video about blogging there -go the Kiwis :-). The Think Before You Post video has a very powerful message and we used it in our cyber citizen awareness sessions.
We used Prezi as a presentation tool at a recent conference instead of Powperpoint. This video will give you a good idea of what the tool is about.
