Don Norman currently serves as Director, The University of California, Design Lab. He is also co-founder and principle of the Nielsen Norman Group. His collection of books on design is expansive, but one of my favorites, The Design of Everyday Things is a great book for any UX practitioner.
To suggest Don is a busy guy is a big understatement. He is actively working with many companies and educational institutions at the moment while staying engaging with the University of California since the sixties.