Although philosophers who happen to be Christians have been around for quite some time, their work has been largely accommodated to secular thought. The 20th C. Dutch philosopher H. Dooyeweerd originated a system of thought that proves to be the most well-rounded paradigm ever based on biblical principles. Although most of Dooyeweerd's writings are either inaccessible to the amateur philosopher or stuck in Dutch*, Clouser does an exceptional job of presenting Dooyeweerd's philosophy in a clear and understandable manner.
*A translation project was begun in 1994--published by The Edwin Mellen Press (Lewiston, NY)--and will continue, Deo volente, until all of Dooyeweerd's writings have been translated into English.