One woman seemed to think that her phone conversation was more important than anyone else in the theater's experience. This takes the phone brightness from texting to the next annoying level.
"Went to watch Monsters University with my wife and friend. Part way through the movie this lady answers her cell phone, walks to the nearest emergency exit, and holds the door open in the middle of the day. The entire theater lit up. I wasn't about to let this slide. I ran down and pulled the door shut, locking her out. I received an applause from the crowd. She had to do the walk of shame as she came back into the theater to sit back down."