i did a generic soccer fan shoot for a client today which included people cheering to a (black) tv screen in a bar. since part of the restaurant was being frequented by lunchees, the models had to be relatively quiet and mute-imitated their cheering and screaming. which was pretty funny to watch, especially since i could direct the non-existent game anywhere i wanted.
I did this once for a video shoot. Had the audience dance to a non-existant club soundtrack whilst we filmed them, about 200 people, was fun…