Available on iTunes U from Oxford.
Recently Oxford became one of the first UK universities to provide free audio and video lectures to the public via the 'iTunes' software. The material is reached through the 'iTunes U' section, and all the major American universities are already well represented. Oxford's initial offering includes over 150 hours of material representing all areas of academic research. Simon Benjamin has made a series of video podcasts on quantum nanotechnology, which discuss what kind of material one would need to use in order to realise the most exotic technology ever conceived of: a quantum computer. These podcasts featured in an ITN news story about the new Oxford initiative.
Users of the iTunes software (freely available from apple.com) can see Simon's podcasts by clicking on the link below, and then clicking the 'video' tab. http://deimos.apple.com/WebObjects/Core.woa/Browse/ox-ac-uk-public.1626102066
Further information about Oxford on iTunes U is available at http://itunes.ox.ac.uk/ where you can also access the videos through your browser if you prefer not to install iTunes.