I've still been thinking about the teacher as DJ metaphor, the idea that now that we have access to a much wider array of materials, and that creating content is getting easier, we might think about moving away from that traditional follow the lesson plan mode and instead create playlists of content and assignments that teachers can pick and choose from based on the needs and interests of the students. Inherent in this concept is that whatever mix is selected, the goals and objectives of the unit would be covered. Interesting concept.