When Adam Sandler hangs up on the Critic, there is an audible dial tone, something cell phones do not have.
(possibly intentional) Critic constantly makes reference to all the product placement in the movie and blames it on the companies' greed, when actually all the brand names seen in Eight Crazy Nights were put in without the companies' permission.
Getting to the part of the movie with the "Bum Biddy" song, immediately following Davey's line of: "I was such a shit-head, but he never quit on me." The Critic points out how that statement was false and chastises the filmmakers for this perceived error. However, had he listened to the very next verse, which was: "'Til I told him he was useless, and his sister was freaky," he would've realized that was not an error on the filmmakers' part.