A collection of highly-motivational and inspirational materials (at least for me):
Steve Jobs’s Commencement Speech in 2005 at Stanford University
Randy Pausch’s Last Lecture: Achieving Your Childhood Dreams
Jeff Hawkins’s TED Talk: Brain science is about to fundamentally change computing
Andrew Ng (Director of Stanford Artificial Intelligence Lab) – The Future of Robotics and Artificial Intelligence
Richard Feynman’s commencement address given in 1974 at Caltech – “Cargo Cult Science”
Bruno Bozzetto – Freedom must always be conquered (Celebration of 60 years of freedom, by Council of Bergamo)