At Doubt: There was a chorus of coughing. It was possibly the funniest experience I have ever had in the theatre. It absolutely sounded like coughing counterpoint, with a definate rhythm. (COUGH coughcough COUGH coughcough ...beat...beat...COUGHCOUGHCOUGHCOUGH cough. clear throat. cough. repeat). It was like someone was conducting the audience. This continued up until the end of Brian O'Byrne's opening monologue, which I heard none of.
At the same show, I sat next to an elderly couple and their friend, who, right before curtain, decided she wanted to sit at the end of the row because she had to leave early. So everyone in the stage-right half of the row had to shift down one seat.
With this woman gone, I was stuck next to the elderly man. He was wearing a hearing aid. Hearing aids, if not tuned correctly, emit a loud, high-pitched sound that the owner of the hearing aid, being deaf, cannot hear. It was a constant throughout the performance, stopping for only seconds at a time. He was also wearing a headset device to hear the actors better. His wife kept leaning over and, presumably not knowing how loudly she was speaking (in a normal, conversational voice), said "can you hear it now? How's this? Is it better?" He would respond "No, I still can't hear anything," and they would switch headsets. This happened at least 10 times throughout the show. The worst part was, since they couldn't hear, I couldn't say anything to make them stop without being loud myself.
theatre.