Revealing mistake: In the opening shot, while Carol Ann is calmly jogging, moving along right beside her is the filming vehicle's shadow, visible at the bottom of the screen, then Carol Ann exits the park. (00:01:30)
Revealing mistake: In the photo Billy Joe shows Magnum, his sister's image appears superimposed on a background - which is also quite unlikely from anyone near Shamrock, TX, and more like a lush Hawaiian scenery. (00:04:30)
Revealing mistake: During the kendo sparring, on the breastplate of the kendogu you can see the reflection of the set lights, practically all the time. (00:11:00)
Revealing mistake: The chopper lands and an upset Billy Joe Bob disembarks. A low standard for body doubles is set when you realise that TC has been replaced by some white dude wearing a bandit scarf on his face and sunglasses. (00:15:00)
Revealing mistake: Magnum is back from his meeting with Ito. When TC from his seat reaches for the heli door, you can spot he's someone else wearing a ski mask. (00:33:45)
Revealing mistake: Billy Joe Bob steals the Ferrari, but the interior shot of the car with him switching gears is stock footage; the person in it has sneakers on like Magnum, not James Whitmore Jr.'s cowboy boots. (00:37:00)
Revealing mistake: After wiring TC's chopper, Billy Joe Bob puts the headset on and looks behind him. When he turns his head to look, you can see that on the right pad there's something handwritten with an ink marker on it; "D. JONES." Makes no sense on TC's chopper, but much more sense when you know that the aerial coordinator and helicopter pilot for this season of the show is named in fact J. David Jones. (00:40:45)
Revealing mistake: When Billy Joe Bob downs the 3 Japanese goons hitting them with the skid of the chopper, only two (at most) are hit and on the chest, the other (again, at most) gets the impact of the other two knocked against him, and all of them land on soft grass. Yet of course they are unconscious and KTFO for good. (00:43:30)