SUBREDDIT: r/AskReddit
TITLE: Although nothing could have been more serious than the shooting in Denver, what happened in your theater during the midnight show for The Dark Knight Rises?
POST: First off, my condolences to all who were related to anyone that was lost in the shooting, and best wishes to all who are now safe. 

In my theater, someone decided it would be funny to pull the fire alarm about thirty minutes before the film started. Everyone was just sitting in their seats and no one wanted to move, but then one of the theater guys comes along and tells everyone to leave the theater and wait across the street until the fire truck arrives and the guys check out the theater to make sure nothing is wrong. It wasn't pouring rain out there, but it was raining a bit hard. We stayed out there for a good fifteen minutes before we were let back in and yes, there was a mob of people running into each auditorium. Before that, as the fire fighters were walking back to the trucks, a bunch of asshats decided to start screaming 'USA' at them.

Other than that, the only thing that happened was someone kept using their small dark knight action figure and making it fly across the screen in a light to make it seem like a giant batman.
TL;DR: 
'Funny' guy pulls fire alarm, everyone stands in rain for fifteen minutes before massive mob rushes back in to theater to watch batman fly across the giant screen.