Ligon Duncan is the Senior Minister of the historic First Presbyterian Church (1837), Jackson, Mississippi, President of the Alliance of Confessing Evangelicals, Chairman of the Council on Biblical Manhood and Womanhood, Convener of the Twin Lakes Fellowship, and Adjunct Professor at Reformed Theological Seminary. He served as the 32nd Moderator of the Presbyterian Church in America (2004-2005), the youngest minister ever to fill that post.
The lecture style is a personal taste issue that each person may feel differently on. The content is helpful without being overly antagonistic toward fellow believers.