Moral Event Horizon: Near the end of the movie, Dr. Hendrickson plans to shoot Adam with tranquilizer darts from a helicopter. As they're currently in downtown Las Vegas, the copter pilot protests that if one of the darts hits the giant baby Adam, there's a chance he might fall into the gathered crowd. Then Dr. Hendrickson crosses the line with one statement:
Dr. Hendrickson: Well, we'll just have to hope that doesn't happen.
Nightmare Fuel: Mandy hanging precariously to the edge of the sports car several hundred feet above the Las Vegas Strip courtesy of Adam is sure to be this for anybody who has a fear of heights. If not for Nick's quick thinking, and Adam's timely catch when the car finally fell off the neon light on which he had perched it, it surely would've ended badly for both of them.
Sophomore Slump: Easily the least regarded of the series, as a giant baby wandering around is simply nowhere near as interesting a premise as people getting shrunk and having to deal with a bunch of regular stuff that's now gigantic.
Giant-sized baby Adam's almost hurt by the tranquilizers and being hurt by the electric shock from the Hard Rock Cafe guitar prop the tranquilizer hit made Adam cry. So much that even the crowd, who were moments ago afraid of Adam, become concerned and worried for him. It also drove people to tears as well. Even worse when he calls for his mommy, who is still normal-sized and unable to comfort him, before she arrives in giant size.
The moment when Wayne admits that he can't do anything to fix Adam without access to the lab.
Values Dissonance: A small one but after Adam picks up Nick and Mandy to put them in his front pocket, Nick discovers food (usually miniature sized food but as large as their heads here) and offers a M&M to Mandy who turns it down as she's on a diet. The comedy could be that the usually tiny food would result in a large calorie intake for their shrunken selves, but given that Mandy is played by the slim and beautiful Keri Russell and the attention paid in recent decades to the damage that Hollywood Pudgy and Hollywood Thin can do to the body image of young women, this scene comes off as irresponsible.
Visual Effects of Awesome: Some exceptions notwithstanding, the effects and camera tricks that enlarge Adam throughout the movie as well as Diane still make the result convincing in several shots.
