Continuity mistake: At the end of Rocky IV, Rocky's son Robert is around 6 or 7 years old. After Rocky comes back from Russia in Rocky V, his son is around 12. While there was a 5 year interval between Rocky IV and V, no time had elapsed from the two in movie time. So, therefore, his son should still be the same age given that Rocky has just recently fought Drago, "The Russian" considering his bruises, and they all returned home right after the fight.
Revealing mistake: When Tom Cruise and his girlfriend are visiting his former arch rival and now good friend, his wife calls Tom "Tom", not by his character's name.
Continuity mistake: When Jimmy goes into the big house, he does not close the door, but while he is dancing you can see behind him the door open/close/open.
Audio problem: Near the middle of the movie, in the scene when Van Damme's friend Joshua is taking Helene money, you see that the military police have set up a surveillance across the street. They show the policeman's point of view as he is looking through binoculars. You can hear Joshua spray breath freshener into his mouth. The window is closed and they are too far away to hear this on a busy street.