Dr. Jensen earned a Ph.D. in philosophy from UCLA after graduating from California State University, Long Beach, with a bachelor’s degree in chemistry and a master’s degree in philosophy. He specializes in ethics and ancient Greek philosophy, especially Plato. He teaches a wide range of courses, including Contemporary Moral Issues, Logic, and various courses in the history of philosophy: ancient Greek, medieval and modern. In addition, he has developed a course that explores the relationship between philosophy and science fiction, and he sometimes offers a course on C. S. Lewis and the Inklings.

Dr. Jensen has contributed chapters to Batman and Philosophy, 24 and Philosophy, Battlestar Galactica and Philosophy, The Office and Philosophy, and Johnny Cash and Philosophy, all of which are new or forthcoming books in Blackwell Publishing's Philosophy and Pop Culture series. He is a member of the American Philosophical Association and the Society of Christian Philosophers.