The Scratch conference of 2013 started every day with a plenary session with keynote speakers of world fame.
Citilab has the recordings:
On the Citilab channel you'll also find talks of David Hellam, Wolfgang Slany, Dan Garcia, Juan Carlos Lopes and Carmin Karasic, the plenary discussion on "Supporting Computer Science in Schools" as well as two collections of six ignite talks.
The first European conference on Scratch will be held July 25-27 in Barcelona. Educators, researchers, developers and other members of the worldwide Scratch community are gathering to celebrate and share the creative possibilities of Scratch. If you're interested in learning to program and programming to learn, join us!