We saw Harry Potter at the theater, the first time we've gone since about five years ago, and I actually blocked my ears at a number of points when music was playing. It was WAY louder than we play movies at home!
....I'm still in my LOW 60s so I want my hearing to last at least till I get older!
My home system so completely destroyed what we heard at the theater that we went a couple days later to a different theater to see if it were a fluke.
...and we only have M50s in a sucky room with an M3 for center and surrounds. And a little 12" sub with only 275W.
Pirates 3 was better at the new theater, but I still came away with a renewed respect for my humble system.
In both cases there were voices through the subs and inferior surround at the show.
Even the Wife commented on how much better the Pirates theme sounds on our home system than at the theater!
...yeah; it surprised me too!