Shows you've walked out of
I've never walked out of a show, but I'm a huge Les Mis fan and saw it on Broadway 3 times. However, when I saw the revival (in 2008/9 I believe), when Daphne Ruben-Vega started singing I dreamed a dream, I was tempted to. I was there on a school French Trip though, so I couldn't, but half the class booed which may have been worse.