For a wide range of topics/resources on Digital Citizenship, check out this Diigo List. All resources have been tagged and cataloged from the entries found in the Ad4dcss Diigo Group on Digital Citizenship. This just makes them easier to find when educators are preparing a workshop or focusing on a specific topic area.
Here is a collection of 75+ videos that might be helpful in the teaching of Digital Citizenship in our schools. Note that many of these are YouTube videos and the site may be blocked at your school. But using a tool like Zamzar.com, you could download them in advance and play them as stand-alone videos.