The difference between regular TV and High-Definition TV, or HDTV, is like comparing cassette tapes to CDs or VHS to DVD. One is fine, but the other is so much better.

How much better? Well, in technical terms, HDTV uses up to 1080 lines of viewable resolution compared to the 480 lines on standard TV. Meaning, HDTV images have twice the color resolution and roughly six times the sharpness. More on the technical stuff here.

For now, think of it this way: watching shows and movies on HDTV means you'll see things you never knew existed and experience enhanced audio. Fine details that add to the depth and dimension of a movie or sporting event. Combine that with digital audio and you hear subtle sounds in a movie's audio track that can turn your viewing experience into something almost real.

To see if HD broadcasting is available in your neighborhood, contact your local cable provider.