I was at a performance of My One and Only where the leading lady didn't show up to dance the finale. Tommy Tune gamely danced the entire piece with an imaginary partner.
Also, recently at M Butterfly a robe descended from flys on a rod. As it descended it jerked and pitched so that the robe just fell to the stage floor. The rod then went back up to the flys just to come crashing down a few seconds later. Luckily not hitting anyone or anything. Without breaking Jin Ha just pushed it off to the side of the set.
