(at around 1h 6 mins) Cody mentions the coordinates of the Cascade Mountains as: Long: 44 degrees 5' 2" Lat: -104 degrees 24' 8". They actually represent coordinates of the Black Hills in South Dakota, not the Cascade Mountains.
(at around 4 mins) Also in the opening action scene, the Volvo skids to a stop at the edge of the railroad track, where the train scrapes against the car's front left corner, shooting off sparks. When the front of the car is next shown, there is no damage whatsoever.
(at around 1h 21 mins) During the fight in the secret lair, Cody jumps sideways over what seems to be an engine block. While he does this, the hood on his jacket is up, presumably to hide the face of the stunt double, but before and after it is down.
(at around 1h 20 mins) When Cody is in the glass dome with Natalie, Ronica is outside the dome placing little red light gadgets. You can see she is wearing purple lipstick, but when she enters the dome to get Cody and Natalie, she has red lipstick on.
(at around 1h 21 mins) Right after Cody and Ronica are caught trying to rescue Natalie from E.R.I.S, Cody escapes and flips over a cart. He does a front flip 180 (half a rotation), meaning he should have landed facing back towards the cart, but in the next shot he is seen facing away from it, and then running to safety.
(at around 4 mins) As Cody attempts to rescue the baby from the out-of-control car, a sign for Famous Players can be seen in the background. Famous Players is a Canadian movie theatre chain. However, the movie supposedly takes place in Seattle. Also, a street sign saying "Esplanade" can be seen. The Esplanade is a major road in North Vancouver, British Columbia.
It is said Cody can't even talk to a simulated woman and when he tries to talk to a real girl he starts to stammer or clams up i.e can't say a word and they make a big thing of it (bringing in all sorts of specialist advisers to help Cody) but since their first meeting he never had that problem talking to his handler, female agent Ronica Miles.
The goof item below may give away important plot points.
(at around 4 mins) When Cody is trying to save the child in the car, it shows a shot of a railroad guard descending to prevent traffic from coming onto the train tracks. However, when Cody manages to stop the car, it is almost hit by the train and the guard is not there.