Here's a question for those of you that have seen SPAMALOT.
POSSIBLE SPOILER!
In the 2nd act, when they find the Holy Grail in the audience, is the person sitting in that seat a "stooge" (i.e. a plant), or is he really a paying member of the audience?
If he's really a member of the audience, how can they be sure he won't discover the Holy Grail under his seat before that point in the show?