Don Norman is a famous guru of HumanCenteredDesign. His books include:
Formerly an Apple Fellow. Now a lead at UNext.com, and a principal at Nielsen Norman Group (http://www.nngroup.com) (along with JakobNielsen, BruceTognazzini (Tog), and BrendaLaurel).
Reviews of his books can also be found at http://bookshelved.org/cgi-bin/wiki.pl?DonaldNorman.