Visible crew/equipment: When Officer Romero and Arthur are alone in the house, handcuffed to the brass shelving unit, as she says, "Help me or I will crush you like a damn bug," a crewmember wearing glasses and a blue shirt is seen crouching on the floor, at the bottom right of the screen.
Visible crew/equipment: When Desalvo, Ferroni, Matt and Andrew are all in the backyard waiting for their moments to strike, in the exterior shots facing the back doors, Arthur is standing facing the TV and there is a small beige rug between him and the TV which disappears in following shots.
Revealing mistake: About 30min into the movie, there is a scene at an airport with a 4-engined 707 freighter. As the characters walk behind the jet, you can see that the left-hand inboard engine pod has no engine on it, unlike the outboard pod. The aircraft is obviously being dismantled despite the appearance of having just landed.
Continuity mistake: When Snake falls toward the water with the "kingpin's suitcase", the gun is in his right hand and he's gripping the heavy suitcase in his left hand. Yet, in the last shot of him underwater the gun and suitcase have switched hands. Interestingly this is not a flipped shot, the watches are still on his left wrist.
Continuity mistake: When Stanley Tucci throws his wallet at Tom Sizemore in the bar's robbery scene, the wallet hits Sizemore in the face, then hits his upper arm, then falls behind him to his right. Yet, in the next shot, it has landed on the bomb case on the floor to his left. The same thing happens a few moments later when Tucci throws his keys at Sizemore.
Plot hole: When the pilot rolls the plane to dump the suitcase carrying the bomb, Snake grabs hold and falls out of the plane with it. Snake saves himself from falling to his death by grabbing the railing of the open door. The weight of the suitcase would have either ripped one of Snake's limbs off or would have ripped the railing from the door.