Revealing mistake: In the early part of the chase scene, when the person hanging the banner swings into the pane of glass, you can actually see it start to shatter before he touches it.
Revealing mistake: When the Chinese dragon is knocking over the trash cans you can see they are all perched at an angle on the curb to facilitate being kicked over.
Revealing mistake: When the sign worker falls off the ladder and swings down to break the pane of glass, his support wire is visible.
Revealing mistake: During the car chase, the dump truck tailgate is closed when dumping sand onto the Cadillac. With the tailgate open, the sand would not have filled the interior of the convertible.