How would you like to feel immersed in the soundfield of the movie you're watching, similar to what you experience in a large Dolby Digital or THX commercial movie theater--only you'd be in your living-room, den, or family room? The sound of arrows whizzing over your head in Gladiator, or helicopters flying to your left and right in Black Hawk Down? Virtually every major movie release on DVD nowadays has a Dolby Digital 5.1-channel soundtrack. That's six separate and distinct channels: left and right front; a center channel for movie dialogue; two surround channels for directional and ambient sound effects; and a sixth ".1" low-frequency effects (LFE) channel that feeds your subwoofer to recreate the movie-theater impact of those dinasaur footfalls.