Being a live performer myself... I can sympathize with many of these (forgetting the lyrics, falling on stage - I'm the queen of breaking my toes on stage...). I admire those who have just gone on with the show! I must admit, I'm surprised to hear of shows being restarted or canceled, unless it's a major disaster (IMHO, Pocahontas forgetting the words isn't a major disaster worth restarting the show, what ever happened to "The show must go on"?).
Anyway, once in 2003 in the Indy show, when Indy comes down through the ceiling, and little bits of something fall with him, one of those bits caught on fire on the ground (it's been a couple years, so I don't remember how it happened, but I think his torch had something to do with it). Indy did great and noticed it pretty quickly and stomped it out. The show went on. :sohappy: