Factual error: The beginning of the movie takes place in Las Vegas, but during a tracking shot of the main villain, Bracus, leaving his helicopter, the Los Angeles skyline is visible from the helipad at the top of the building. (00:03:55)
Revealing mistake: Right before Alex and Tommy are about to leave for their date, Walter is playing Tetris. When he puts down the control to come talk to them in the kitchen, the game keeps playing and you can see the pieces moving and turning.