Geoff Sayre-McCord has published extensively on moral theory, epistemology, and modern philosophy, and has edited Essays on Moral Realism and Hume: Moral Philosophy. (See the On-Line Papers link below for a some of the papers.)  Recently, his research has focused on the nature of normative concepts, on evolution and morality, and on Adam Smith's theory of moral sentiments.  His "A Moral Argument Against Moral Dilemmas," "Rational Agency and the Nature of Normative Concepts,""Skepticism About Moral Knowledge," and (with Michael Smith) "Desires... and Beliefs... Of One's Own," are available in draft. Sayre-McCord gave "Sentiments and Spectators: Adam Smith's Theory of Moral Judgment" as the 2009 John Passmore Lecture at the Australian National University (an audio recording is available here).  Sayre-McCord is the Director of UNC's Philosophy, Politics, and Economics Program.

Publications (including some papers available on-line)

Bloggingheads.tv discussion of Metaethics (video)
Bloggingheads.tv discussion of Evolution and Moral Theory (video)
The Philosopher's Zone interview on Moral Dilemmas (audio)