I have published the slides from my @media 2008 presentation in London. Overall, I think the presentation went very well. James Graham and I managed to speak for almost an hour about HTML 5, even though we had only met in person for the first time about 2 hours before we presented, and only had 10 minutes to briefly rehearse.
All the presentations were recorded and the podcasts should be released some time in the near future, though I’m not sure exactly when.