Continuity mistake: In the beginning of the movie Frankie/Rory's (Brad Pitt) mother is serving the dinner. She gives them all dinner except herself, and then sits down. Then the father says the prayer, and when he does that you can see the whole table, and there is food on the mother's plate.
Continuity mistake: Right at the end of the film when Tom (Ford) and Rory (Pitt) are on the boat, Rory is pointing his gun at Ford who is on the floor. He is holding the gun with his right hand and cupping it with his left hand. The camera flicks back and forth between the two actors three or four times and every time the gun is in his right hand. Then the camera goes back onto Rory and this time the gun is in Rory's left hand and it begins to tremble, because of the gun shot he got hit with earlier. He then collapses with the gun in his left hand.