Scripts
Scripts (aka Actor's nightmare, Playbook) is a justification game for three players.
The ref borrows a book from an audience member and gives it to one actor. The performers put on a scene based on the audience's suggesstion, but rather than improvising lines, one actor's speech must consist entirely of random sentences chosen from the book.
The challenge in this game for the players who choose their lines to justify the speech of the one who can't. It's entertaining when random sentences fit the scene's context, but they often should not, so that the other players are forced to play the justification gimmick. To make things difficult for themselves, players should often pimp or ask specific questions of the actor who reads.