At the nightclub, when Chuck tosses his pin onto the serving tray of drinks, it can be heard splashing into one of the glasses. However, in the next scene, the pin is on the tray next to the drinks rather than inside one of the drinks.
Sarah takes off the keypad to the bomb in an attempt to defuse it, however the close-up shots of the bomb countdown have the keypad still attached.
Stavros drives an Audi A8. The shot of Sarah and Chuck being locked in the trunk of Stavros car shows the trunk and the back of a different car. As they drive of it is the A8 again.
Chuck lowers the window at the driver's side when he and Lou are kissing in the car. The window is still up in the two following shots from the inside of the car.
Opening scene, Helsinki. The mystery shipment timer reads just under 73 hours and counting down. Given that container ships travel at about 26 miles/hour at best, the ship would not reach New York, let alone the West coast, in time.
When playing COD 4 one can only "use" perks as a passive affect, but Morgan says he is going to use a perk as if it was a potion.
When Chuck and Sarah are arguing in the trunk of Stavros's car, you can see a flashlight shining on Chuck's face.