Stanley stealing Mr. Sir's truck and driving it into a hole (accidentally) and then running away. Also a Crowning Moment of Funny.
Stanley carrying Zero up a mountain, unknowingly breaking the curse on his family, as Zero is descended from the sorceress who made it.
At the end, as Stanley and Zero are about to leave Camp Green Lake, the Warden desperately begs Stanley if she can see what was in the suitcase. Stanley's response is to throw her Catch Phrase right back at her: "Excuse me?"
In a deleted scene, Stanley imagines his camp mates threatening the school bully not to mess with Stanley anymore. This was only acknowledged in the book.