I've got a few. I was in Grease last year. Opening night our table collapsed in the last scene. Our radio voice found it necessary to announce this...into my mic.
During rehearsal we were doing the dance scene that opens Act II. Our Kenickie decided to do to Patty what his character does in the movie. He runs up and pulls her skirt all the way up to her chin. She was in a thong. It was hysterical. We added it to the show, but with her in shorts.
The same show, different rehearsal day, we were rehearsing Beauty School Drop Out. Patty doubles as a Teen Angel. The angels wore table cloths with head holes cut out . They went to just aboe our knees in front and back and above the hip on the side. Patty decided one day she didn't want to wear her pants. I stood next to her. Not pleasant.
Our Danny Zuko had a whole in the crotch of his pants. He didn't like underwear. We all saw his, well, you know. The whole got progrssively bigger. He didn't care. Then we all went to the aprk and he played basketball until the whole went from a**crack all the way around the front. Then we made him wear sweat pants. (Our closing night we rewrote There Are Worse Things I Could Do to sing to the director. We sang ..."little Dave said peek-a-boo...that's a thing he shouldn't do!"
Our sonny decided to not wear pants for the dance scene one night. I was Marty and had to dance with him.
Opening night sonny had to jump over a fully upright company member. He fell but covered wel by shrugging and making a goofy face in true Sonny fashion.
Our choeography was ALL box step...everything!
This year was Guys and Dolls. Sky (Danny Zuko) missed his cue two nights in a row leaving Sarah and I (Cartwright) stranded. We add-libbed about how I'd have to lcose the mission til he was shoved onstage.
He also missed his line with Sarah about the amrker. The entire show no longer made sense.
Our tree in the Havannah scene fell over. Sky picked it up while Sarah laughed like a drunk, which fit the scene.
Megan Mullally as Karen Walker on Will and Grace: "Tell me more. Tell me more. Like does he have a car?"