I forgot to add that the experience can be either in a commercial theater or home theater. For me, the first movie i experienced in 5.1 sound was the 1997 re-release of Star Wars. The theater I frequented (which is now closed) had three screens and just prior to the re-release of SW, they had installed digital sound capabilities. The experience was incredible. I could hardly believe how good the sound was and how digital sound really put the viewer in the middle of the film. I can't remember the first time I experienced 5.1 sound at home. It may have been Mission: Impossible, but I'm drawing a blank.