If you attended the fantastic SQL Saturday 105 in Dublin, you might be interested in these slides.
We've presented on Data Visualisation in the UK, Europe and in the US. Here is a sample slide deck. As always, these are subject to change as we develop our presentations in response to community requests for a different perspective, or in response to an update in technology, for example.
Here is an example of one of my Data Visualisation presentations:
Sql pass business intelligence chapter bi and data viz in sql server 2012