Inventor of the Web Sir Tim Berners-Lee presented at HP Labs this week.
He spoke about the past, present and future of the Web.
The first and second wave of the Web are covered in the first 15 minutes.
He covers the coming third wave of the Web in the remaining 26 minutes.
Video of his talk is here - runtime is 41 minutes.
Video of the follow-on Q&A session is here - runtime is 38 minutes.
Recommended viewing in full - for those interested his weblog is here.