When Steve goes into his boss's office to resign from his G-man's job, the door oddly has no door frame as the camera follows him past a coat rack and a water cooler. A very unusual set construction and shooting technique to show a character passing from one room to the other. This may also reveal the budget constraints of the picture - at least in regards to set construction.
Boom mic arm and crew member visible in wind screen of parked vehicle at 14 minute point.