Blooper

Shortly after the professor finds out about his disease, he stomps into the campus pond, cursing and kicking. At some point, he falls and, as we see from above, is submerged at least up to his neck. We see quite an amount of water splashing on him, wetting his shoulders and the back of his jacket right up to his head. In the next scene, however, only half of his torso is wet - to the upper half of his chest - while his face, hair, and shoulders are completely dry as if he had gently walked into the water and sat down.

During his dinner speech in act V, Johnny holds and drinks a glass of red wine that changes into an empty champagne glass that changes into an half-full glass of champagne.

Right at the end, when Richard is driving the car, he stays straight without moving an inch; contrarily, his dog Jibbles is shaking like he's in an earthquake.