Other mistake: Tom Ripley's ticket says first class in the limo, but when he boards, the rich girl says she saw his stuff in the third class stack. Dickie also says that he's a third class mooch, but according to his ticket he rode first class, so that'd make him a first class mooch, not third. His cabin is never shown. (00:07:20)
Other mistake: Tony Clifton comes on the 'Taxi' stage accompanied by two prostitutes. He introduces one as Melonia, squeezes her breasts and asks 'how is our produce department?' The German subtitles read 'production department'. (00:44:25)
Other mistake: Multiple mistakes are made at the end of the game against the Wildcats. Before the final touchdown, the Wildcats are shown leading 13-0 with 6:00 minutes left in the game. After the touchdown, the Wildcats are shown leading 20-3 with 3 seconds left in the game. Based on Mox's position in the two shots, no other plays happened, meaning that the time and score in one of the shots is incorrect. The clock also continues to run when the touchdown is scored even though it's supposed to stop.
Other mistake: Throughout the film, the Hickams' phone buzzes. When Elsie throws the phone into the yard, it breaks to reveal a pair of bells.