Sarah Powers has several DVDs out. The ones that include Yin sessions are "Yin and Vinyasa Yoga DVD" and "Insight Yoga DVD". Both also include yang/flow sessions for a balanced practice.
Paul Grilley also has several DVDs. The one with Yin practices is "Yin Yoga". I also highly recommend his "Anatomy for Yoga" DVD. Great way to learn about the structure of your own body and why some poses may be more challenging for you to do.