Holiday Lectures on Science
Howard Hughes Institute. Webcast lectures, teachers' resources, archives.

The Vega Science Trust
A collection of video-on-demand science programmes, including lectures, discussions, workshops, archive footage, and science media links.

The Naked Scientists Online
A science, medicine and technology on-demand internet radio show containing a digest of science news stories in text and streamed audiovisual format and numerous interviews with famous scientists. From online scientists at Cambridge University

Estium-concept:
Offers to create visual materials on CD rom for presentions. Includes samples of work.