Continuity mistake: When Kate enters the room with the cot at Brad's father's house, she unbuttons all three buttons and begins to open her coat. The shot then changes to Brad's face for some time. On the return shot of Kate, she's beginning to unbutton the coat all over again, starting with the first button. (00:18:25)
Continuity mistake: During the scenes at her Mother's house, Kate's hair goes from blonde to REALLY blonde.
Continuity mistake: At her mother's house, when Kate finishes with the pregnancy test, its position moves on the counter beside her.
Continuity mistake: At Brad's mom's house, after Brad and Kate are finished with their frustrating turn at the board game and Brad shuts down, saying our time is up, the hour glass is fully turned upright with all the sand in the top section. In fact, the sand doesn't even seem to be dripping into the bottom section.
Continuity mistake: At Pastor Phil's church, when Kate and Brad are preparing for the play and the baby is handed to Kate, the pamphlet jumps in and out of the baby 's grasp between shots - when his hand is not at his mouth.
Continuity mistake: In the sex scene in the bathroom, Kate rips Brad's shirt off and buttons go flying. When he comes out of the bathroom afterwards, he's buttoning his shirt back up.
Continuity mistake: After Kate is thrown from the jump jump, we see alternate facial shots of Reese and her stunt double before she climbs back in.
Continuity mistake: At Paula's house, during the game, when Denver eats the chicken wings they change between shots.
Continuity mistake: When Brad and Kate are arguing in the SUV, the headrest material changes between shots.
Continuity mistake: At her mother's house, when Kate is in the bathroom after she changes her clothes, the items in Courtney's baby bag disappear, reappear or change position.
Continuity mistake: When Brad and Kate are at the airport all the flights are cancelled because of the fog. Outside you can see its a cloudy/foggy day, but when they are going to Brad's father's house it's perfectly sunny.
Suggested correction: The micro climate weather in SF could easily create fog by the airport and no fog in another part of the city or the Bay Area.