Here are some YouTube videos of a NOVA program on epigenetics. Given the intended audience, the content is a bit basic given what we have already studied. But they do raise a point of epigenetics and diseases. NOVA discusses a pair of identical Spanish women: one has recently (at the time of the video) been diagnosed with cancer and the other is fearful that she will eventually be diagnosed, too. They also discuss epigenetic therapy, trying to change the instructions of the cancer cells. Both are interesting topics of discussion.
Part I -- https://www.youtube.com/watch?v=Xjq5eEslJhw
Part II -- https://www.youtube.com/watch?feature=endscreen&v=wFsxVkuChdU&NR=1