Introduction to RDFa – semantic markup for HTML pages
A very nice introduction to RDFa semantic markup for HTML pages by Mark Birbeck. This presentation is from a Google talk Mark gave in June 2009.
[Warning: This talk is definitely for a technically-inclined audience. But if you are technically-inclined, and want to learn about the RDFa approach to semantically marking up HTML web pages, this is a great video.]
The code samples can be more clearly seen in the accompanying slide presentation.