Fr. Cameron has conducted preaching seminars for the presbyterates of eleven dioceses/archdioceses in the United States and Canada.

He has also offered homiletics workshops at the National Institute for Clergy Formation (Seton Hall University, NJ); at the Pope John XXIII Preacher's Workshop (Pope John XXIII National Seminary, Weston, MA); at the Liturgical Institute (Mundelein, IL); at the Intercession for Priests Retreat (All Hallows Colleg, Dublin, Ireland); and for five years at the Pontifical North American College (Rome). His articles on preaching have appeared in Crisis and America. He is the author of five books, The Classics of Catholic Spirituality, The Love That Never Ends: A Key to the Catechism of the Catholic Church (co-author), and the three-volume To Praise, To Bless, To Preach: Spiritual Reflections on the Sunday Gospels; he is also the editor of the book Benedictus. He has preached many retreats to priests, seminarians, cloistered nuns, sisters, and lay people, and has conducted several parish missions and days of recollection. He is the founder and director of Blackfriars Repertory Theatre, the coordinator and a host of the Sirius radio program Word to Life on The Catholic Channel, and the founding editor-in-chief of Magnificat.