Corrected entry: When J, K and the worms infiltrate MIB HQ, they're carrying some pretty big rocket-launcher-sized guns. During the scene in the elevator when they're hiding on the ceiling, the big guns are nowhere to be seen. J only has a pistol during the Jarra fight, but suddenly has a big gun again when confronting Sirlina later.
Corrected entry: The actor who plays the video rental store clerk is the same guy who plays the morgue attendant in the first film, who is killed by the bug.
Corrected entry: The MIB's do an awful lot of stuff in broad daylight without worrying about neuralizing people. They pop into a busy intersection out of tubes, covered in blue goo, use a remote control car with a driver that pops into the steering wheel, and fight a giant bug in the middle of a sidewalk, all without calling in one neuralization unit or even WORRYING about the people seeing. Also, what do you think the chances are of every single person who saw what happened over the skies of New York staying to stare at the Statue of Liberty? Most people probably wouldn't stay staring out the window even after everything died down.
Corrected entry: We know from the first movie that the small "cricket gun" is very strong because Will Smith flew backwards and the gun made a huge hole in a big truck. However, in the second movie, when Tommy Lee Jones uses the gun to blow off Jeebs' head, it sounds and acts like a regular plasma sort gun, that only fires a plasma or laser beam.
Corrected entry: In one of the very first scenes, there's a dog that barks. When it does so, you can clearly see it's breath, indicating that it's a winter month with cold temperatures. However, the movie is supposed to take place in July.
Corrected entry: When J & K are flushed from the deneuralizer chamber in the blue toilet cleaner-like solution & are ejected up on to the street, wouldn't the blue liquid have dyed their dress shirts blue? If this blue liquid can cling to the metal walls of the tubes they pop out of on the street, then why doesn't it soak into their white shirts?
Corrected entry: In one of the diner scenes, Jay coments over the fact that the 85 people he saved on the subway will never remember it. 85 people? The group he neuralizes on the train can't be more than 30 or so, and even if there are a few we can't see, there is no way that 85 people could have fit into what was left of the train.