Dinesh D'Souza, author of books such as: What's So Great About Christianity, What's So Great About America, and others, is a Conservative writer and speaker who once served as a research fellow at the Hoover Institution at Stanford University. His apologetic method is strong on rhetoric, reason, and historic facts. D'Souza has had debates with many key atheists/skeptics and has defended Christianity well. Check out his various mp3 debates and lectures below.
Dinesh D'Souza: A Reasonable Faith: Intellectual Foundations for Communicating the Gospel in American Culture
Dinesh D'Souza at Wikipedia.