Continuity mistake: In the scene following Riggs and Murtaugh's conversation on Murtaugh's boat, Riggs crumples a beer can, and Murtaugh holds open the trash can lid, but the can falling into the trash can is intact, not crushed.
Continuity mistake: When the helicopter with Joshua comes up and he starts firing at the house, Hunsaker has both hands on the carton of eggnog. When the camera cuts to a wide shot, he's starting to react to being shot again, and his left hand is about a foot away from the carton.
Continuity mistake: On the shooting range, Roger hangs the target on the mechanical arm and runs it out a short distance. After it settles, the bottom hangs at about ten° to the left of the target's center. After running it back to show to his partner, and before Riggs runs it all the way to the wall, the bottom now hangs about 3 to 5° to the right of the target's center.
Continuity mistake: Riggs is completely dry before he begins his showdown with Mr. Joshua, but after Mr. Joshua says "Don't mind if I do", we cut to Riggs, and he is now soaking wet.
Continuity mistake: When Riggs is fighting Mr. Joshua at Murtaugh's home towards the end of the film, the lawn is completely saturated in water from the spray at one point, but in the next shot appears completely dry.
Answer: The jumper's name was Len McCleary. He was played by Michael Shaner and is credited for the role in the film (and on IMDB).
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