Other mistake: When Deeds is rescuing Miss Keeling's cats, there are two mistakes. There are smoke and flames inside her apartment - both of them should be coughing a lot from the smoke. Oxygen gets displaced in a fire. Second mistake is why isn't any of the fireman inside the building coming up to her apartment or even fighting the fire? There is no way any fire dept or police dept is going to let bystanders just walk up to the scene as Deeds and Pam did.
Other mistake: Just before Deeds enters the room where he punches the quarterback, you see Chuck Cedar talking to all his associates. While speaking to them he is speaking in perfect English and they all seem to understand. When Deeds punches the quarterback Chuck has to explain to some people in French as if they didn't speak English.