Author of "ParadigmsOfArtificialIntelligenceProgramming" (aka PAIP), "Artificial Intelligence: A Modern Approach" (aka AIMA, with StuartRussell), "TeachYourselfProgrammingInTenYears", "DesignPatternsInDynamicProgramming", the world's longest palindrome, and much else.
He's also Director of Research (formerly Search Quality) at Google, former ImportantPerson at NASA, and a well known LispLanguage programmer. Homepage at http://www.norvig.com/