sorry if it was done before. i just ran across it and thought it was funny. im always picking out flaws in movies. things like objects on a table. the scene switches back 3 seconds later at its gone. its great if you do it on a dvd or vhs movie. you can go back and see if you were right.i saw someplace that there a people who work in movies just for that situation. they may come back to that part the next day and these people have to take pics of everything so it can be recreated exactly. im thinkin they must get some of these workers from the temp place.lol..my favorite is TWISTER..there driving down the road in a tornado as a big tire and wheel hits the windshield on the passenger side. the window shatters as the wheel goes over the top of the truck. the picture changes to the cab view looking out the window. NOT A SCTRACH ON THE GLASS..LOL. big movie like that you would think no way a huge mistake like that gets by. but it did.