Great talk by Salman Khan about his Academy and how video can be used to deepen learner experiences. Especially interesting is the idea of a flipped classroom.
Great talk by Jane McConigal concerning how developments in the world of gaming could be applied to education to make it both more fulfilling and their for effective.
An excellent Talk that succinctly describes why our educational system has evolved the way it has and how technology and self determined education can be used to reinvent education.