I saw him present his talk about "harnessing the power of people doing meaningless things on the internet" at an AI conference back in 2003, where he introduced

I saw him present his talk about "harnessing the power of people doing meaningless things on the internet" at an AI conference back in 2003, where he introduced what became the Google Image Labeler. Easily the best talk of the conference - he's a great (and engaging) speaker. I think this google talk is roughly the same presentation: http://video.google.com/videoplay?docid=-8246463980976635143 http://video.google.com/videoplay?docid=-8246463980976635143