@icecreambenjamin, I can top that story. So in Spelling Bee, the action goes in this order.
1. Marcy spells Qaimiqam, and Rona says she's all business
2. Audience member gets out
3. Chip gets out (misspells Tittup)
4. Favorite Moment Reprise
5. Last Audience Member gets out (Prayer of the Comfort Counselor)
It's incredibly important this sequence goes in this order, because it set's up Marcy's insecurity, set's up Chip's Lament, and gets the last of the audience members off the stage. However, in our production, the guy playing Panch messed up the order, forgot to call up Marcy, gives Chip a random word (which he luckily spelled correctly), and gets both the audience members out, so we're forced to go to Prayer of the Comfort Counselor. We finally get back on track and get Chip out, but our Rona was so upset she forgot half the lyrics to Favorite Moment Reprise.