A two part video series from a retreat given last November by Protopresbyter George Dragas, professor of Patristics at Holy Cross Greek Orthodox School of Theology in Brookline, Massachusetts. The sound quality is weak in the very beginning but quickly improves. One tidbit from about 15:30 in the first video in discussing the symbolism of the preparation rite for the Divine Liturgy:
It all begins with the bread. The Liturgy begins at home. It’s very important that we bake bread and take it to church and with it we take ourselves. We identify ourselves with the mystery of Christ.
He then goes on to explain the significance of the prosphora and its symbolism.[vimeo http://vimeo.com/17107486%5D [vimeo http://vimeo.com/17365882%5D