Standards, Semantics and Survival talk by Tim Berners-Lee given at the Software and Information Industry Association (SIIA) meeeting (NYC, NY, USA). Partly semantic web introduction and partly going over software patents of web technologies. I think the latter are evil, by the way.
Has some interesting new pictures that I'm duly borrowing:
The element of the Semantic Web
slide 9
Too large to inline here - The Semantic Web Wave from slide 19
