In the opening scene in the pilot episode "Amazing Grace", Declan Dunn (Adrian Pasdar) plays a recording of the song 'Amazing Grace' for his class which touch and inspire both his students and Dr. Winslow Gale (Ken Pogue). The recording of 'Amazing Grace' was sung by Natalie Maines of the 'Dixie Chicks', Adrian Pasdar's girlfriend and soon after real-life wife.