 The 3-disc set of 22 episodes has a , Dolby Surround 2.0 and 5.1, and English and Spanish subtitles.In addition to the episodes, the DVD set special features included unaired scenes, featurettes, and audio commentary on the select episodes, "Flu Shot", "Goodbye, My Friend", "The Bubble", "Apollo, Apollo", "The Ones", "Mamma Mia" and "Kidney Now!