Terrifying Patti LuPone Clip
As you've undoubtedly heard, Patti LuPone almost had a real breakdown while having her musical one in Gypsy on one of the final nights of the show. Someone in the audience at that performance was dumb enough to take pictures of the star while she launched into "Rose's Turn" and Patti broke character--though you could argue that she actually didn't--and started shrieking, "Who do you think you are?" while having them evicted even faster than she'd sent June, Louise, and Herbie out of her life.
The audience applauded nervously and did so again when Patti kept repeating her angry mantra, but by the end of the horrid episode, she had gained their confidence back, thanked them for their respectfulness, and started the song again.
But what I really love about all this is that unbeknownst to Patti, someone was audiotaping the whole thing to put on YouTube. Who do they think they are!