In a nutshell, HDTV offers sharper pictures, a widescreen picture that's truer to the cinema experience, CD-quality sound, and better color rendition. One look at a new high-definition television, and you'll immediately see a quantum leap in picture quality from traditional sets, whether you're used to broadcast, cable, or even DVD picture quality. The image seen on the best models has up to 10 times the detail of a standard set. And not only is the picture more lifelike, the best digital TVs have rectangular screens like in movie theaters, and most deliver the same Dolby Digital 5.1-channel surround sound that rocks audiences at the local cineplex.