When I was at the ACEC2008 National Conference in Canberra last year, one of the keynote speakers was Mitchel Resnick.
"Mitchel Resnick is LEGO Papert Professor of Learning Research, Director of the Okawa Center, and Director of the Lifelong Kindergarten group at the MIT Media Lab. Resnick's research group has developed a variety of educational tools that engage people in new types of design activities and learning experiences, including the "programmable bricks" that were the basis for the award-winning LEGO Mindstorms and StarLogo software. He co-founded the Computer Clubhouse, an award-winning network of learning centers for youth from under-served communities.
Resnick's group has developed a new programming language, called Scratch, that makes it easier for kids to create their own animated stories, video games, and interactive art. Resnick is also involved in the next generation of Programmable Bricks and in the $100 laptop project."
Courtesy Wikipedia article "Mitchel Resnick"
I hope to use Scratch with my class this year - will let you know how it goes!