Corrected entry: At the beginning of Ghostbusters, Peter Venkman says that he studies the effects of negative reinforcement on ESP ability, when, in fact, he actually studies the effects of positive punishment on ESP ability. This can be seen in the fact that he adds an aversive stimulus to the subject when the subject "gets it wrong" in order to decrease that behavior, which is positive punishment. If he was studying negative reinforcement, he would have to make the shock occur at all times unless the subject guessed the right card, at which point, the shock would be removed. Of course, Peter's methods were shown to be less than sound.
Corrected entry: When Dana tells Peter of the refrigerator incident, Peter opens the door to investigate. On the top shelf is a can of Coke with the label "Coke" clearly displayed. Just a moment later, he double checks the fridge, where the can now reads "coca-cola." Somebody turned the can between shots.