Character mistake: During the movie's opening credits, Sara is shown auditioning for Juilliard, which is misspelled as "Julliard" on a sign outside the room where the audition is occurring.
Character mistake: When threatening Evelyn with jail, the Army Signals officer says "Brig" which would be a Navy jail. In the Army the appropriate threat of incarceration would be the stockade.
Character mistake: Joe Dirt mistakenly refers to his 1967 Plymouth GTX as a Road Runner while talking to Jill at the carnival.
Character mistake: It sounds like the person who called him on the cell is not a secretary but also Cameron Diaz pretending to be a secretary. The same voice. (00:07:12)
Character mistake: Near the end, Iris's doctor attempts to take John's pulse. He has his hand wrapped around John's hand, his fingers nowhere near the top of the wrist, where the artery is; and as he counts the "beats", against his wristwatch, John talks to him and he talks back - when you are counting something, you can not talk at the same time; you lose count every time.