During the initial shenanigans between Madea and Miss Smug 'n' Shallow, the forklift is being used by the workmen. When Miss Smug 'n' Shallow steals the parking-spot and waltzes into the store, though, the forklift is shown in its folded-down position and is obviously not being used, and then just moments later when Madea first spots it, the forklift is again partially raised, and the men are working around it.
When Miss Smug 'n' Shallow begins to waltz across the parking lot toward the BigK after her rude-smiley sass reply of, "I saw you --- I took it!", she starts to cross over the white-painted handicapped-striped area in the next spot over from her car. Several seconds elapse after this, during the close-up shot of Madea doing her "Yeah, just walk off like you bad! Are you bad?!" fuming, yet when the camera cuts away to the wide-angle again, Miss S&S is just barely to the other side of the striped area, which would have only taken her a second or two to reach.
While the exact charges against Madea are not specified at the start of the movie, when she is in court all charges are dismissed due to the police not reading her "Miranda". The sole time Miranda is applicable under U.S. case law is when there is custodial interrogation by the police (questioning where the suspect is not free to leave). Any crimes the police witness they do not need to interrogate the suspect. The violation of fleeing the police is shown and battery on an officer is inferred. Miranda would not need to be read for either of these offenses to be proved, and a lack of it being read would have no bearing on the validity of the charges. If the police violate a suspect's rights by custodial interrogation without the Miranda warning, the sole penalty for the violation is the suppression of any statements made by the suspect.
In the beginning of the movie, when Mable's criminal record is shown, her year of birth is shown to be 1962, which would make her 47 years old in 2009, but the character Madea/Mable is portrayed to be much older than 47.
In the scene when Chuck is typing, studying a case for his friend Joshua, the laptop should be on. He is using a MacBook Pro. When MacBook Pros are on, the Apple logo on the back of the notebook would be illuminated white. Thus since the logo isn't lit, the computer is off.