Must I own an HDTV to enjoy Blu-ray Disc movies?
Technically, no, but the Blu-ray Disc format is intended and optimized for high-definition display. You can watch Blu-ray Disc movies on a standard-definition TV as well, provided it has HDMI, DVI or component video inputs. However, even with a Blu-ray player and Blu-ray Disc media, no standard definition TV can produce a true high-definition picture.