New Macbook users have been introduced to another level of DRM recently when trying to watch some movies downloaded from iTunes. Ars Technica first picked up the story after a teacher complained he couldn't watch Hellboy 2 on a classroom projector. (It was not mentioned whether he intented to watch it by himself or show it to his class). Many users on the Apple Support forums have also reported this same problem. New Macbooks include HDCP, and a number of new and older movies on iTunes are flagged not to play if a non-HDCP compliant display device is attached to the notebook.