Chuck

When Chuck goes to buy new locks at "LargeMart" he sees Vuc Andric and has a flash where he sees Andric's passport. On the passport it says that Vuc's place of birth is Belgrad, Serbia but the passport is Croatian.
On the passport it says he was born on 06/10/1980 but the personal number says he was born on 06/10/1932.

Chuck's footwear of choice are Converse Chuck Taylor All-Stars, most commonly referred to simply as "Chucks".

In the scene where Sarah is driving the Nerd Herd car backwards to escape from John Casey there is a continuity error. After the car has been hit, the front tag hangs by only one bolt. The second time they show the tag it has both screws and is securely fastened to the bumper. The third time they show the bumper it's back to hanging by only one screw.

The post-it on Chuck's monitor says "I'm a professional nerd".

The video game Chuck and Morgan are playing is Gears of War a third person shooter for the Xbox 360.

Chuck and Sarah are seen having to walk to the bar, but when they leave, the Nerd Herd car is parked right in front of the bar for them.