These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
Complete Monster: French gangster Fouchet, from the first movie, never had pity for anyone and orchestrated several murders pretty unnecessary. He is a French drug dealer who masterminds the theft of millions of dollars worth of heroin from a police station evidence lock up. To that end, he has one of his men dress up as a police officer, and then kills him in order to create a distraction. He makes off with the drugs, which he plans to sell in four days. When Eddie, who helped him set the heist up, decides to party with some hookers and a tiny portion of the stash, Fouchet kills Eddie and Max (one of the hookers), then tries to kill Julie (Max's roommate). He sends one of his men to hack Max's madame to death with an axe, kidnaps Julie for use as leverage, tries to kill Mike and Marcus (our cops) several times over, kills his chemistry team for "fucking with my schedule", and murders his buyer when the police interrupt the deal. His last act is to try and force Mike to kill him, and when that fails, to pull out a hidden pistol and try to kill Mike.
Crazy Awesome: Michael Bay found a way to introduce a boat into a car chase, helpfully lampshaded By Capt. Howard:
Capt. Howard: 22 cars and a boat, totaled? How do you sink a boat?
Of course, the boat was being towed, and even then, it got managed to be ripped off and slam into a few other cars.
The first movie also blew up an entire airport hangar. There was also a car chase between a Camaro and a a van full of flammable ether.
Critical Dissonance: The second film received particularly bad reviews from critics, with a Rotten Tomatoes score of a 23%. What was the audience score, you might ask? 79%.
Critic-Proof: Predates Bay's Transformers trilogy in this regard. Bad Boys 2 was the definition of a popcorn flick, and despite negative reactions from critics, was a smash hit at the box office.
Ending Fatigue: The second film clocks in at nearly two and a half hours, and doesn't exactly have a big enough plot to justify it.
The Problem with Licensed Games: Miami Takedown is absolutely horrible. Cheap mechanics, lazy design, clunky and stupid AI. They couldn't even be bothered to get Will and Martin to reprise their characters.
For some people it falls under the category of So Bad, It's Good as the dialogue and voice acting are so hilariously awful that mere words don't do them justice.