This HD-DVD lot includes 8 movies in the comedy genre, featuring Blazing Saddles, Big Lebowski, and Knocked Up, among others. These films are in the HD-DVD format, not Blu-ray. An HD-DVD player is required for playback. Some of the movies are combo format, which means that the other side is regular DVD playable by a standard DVD player. Check the pictures to see which ones. I no longer have a player for HD-DVD so I couldn't test the discs, but I remember them working fine last time I watched and their surfaces look fine. That's why they're so cheap. Enjoy hours of laughs with this collection of classic and modern comedies. Perfect for a movie night with friends or to add to your personal collection.