This is a really good piece - the Jawbone.tv series on transmedia experiences and film production is def worth it as well. Link from this - I'll also post that bookmark.
Interesting take on iPad purposing in the corporate world - has implications for educational computing across the spectrum of transmedia application opportunities.
Excellent piece describing use of Transmedia in developing, presenting and promoting projects. Additional links from this page to pieces on Transmedia for Social Change, and more.