Character mistake: When Jim gets home and finds the apple pie on the counter with a note from his mother, the note reads "you're favorite", rather than "your". (00:31:40)
Character mistake: In the scene towards the end, when there has been a bomb threat in the building, Billy Bob Thornton uses a pay phone to call the operator. He asks for the airline's base operations in "Greensboro, South Carolina". Greensboro is in North Carolina.
Character mistake: When Gordon describes Leonardo Da Vinci's idea for a flying machine, he mentions Da Vinci designed it in 1540. However, designs for Da Vinci's flying machines were dated as early as 1488 and Leonardo Da Vinci died in 1519.
Character mistake: At the party when Michael tells a girl he's thinking of getting a Toyota Tercel, he says it has dual side airbags. The Tercel was never available with side airbags.
Character mistake: Henderson asks the guy as he's leaving the room to get him some bourbon. They already drank in the bar and spat it out when they found out that everything had turned to blood, so it would still be blood.
Character mistake: Thomas rips off his one glove as he makes his escape but then grips the bottom edge of the security door to slide under it. Smooth metal door would leave perfect finger and palm prints. I doubt detectives would miss prints on a door that was normally recessed away from the public. His prints may not be on file but would be easy to obtain once he was under suspicion. (00:19:20)