http://www.refwdemail.com/2010/05/simple-memory/
In the context of Assignment 4, this visualization looked pretty interesting.
There has been an attempt to analyze emails, in a way that reflects something beyond numbers – to me, both visualizations had a strong storyline, in terms of charting the personal relationships involved.
The creator does not seem completely convinced with the video version themselves, but I still felt the impact of people walking to and away from the frame told a powerful story of relationships.
Similarly, in the other visualization, the shift from personal to work to school contacts is pretty clear, and thus reflects the changes in their personal lives.
Personally I found both of these strong in terms of an emotional connect, and a storytelling style (though the creator believes there are better, more emotive ways to create similar narratives).