Continuity mistake: In the scene where Andy is sitting in the restaurant with her father, you see her father taking off his glasses. In the next shot you see the father from the back, taking off his glasses again.
Continuity mistake: In the opening scene, Andy is seen eating a bagel, then the shot changes and she has no bagel, but when she goes down the stairs into the subway the bagel is back in her hand.
Continuity mistake: When Andy throws her sidekick into the fountain, she is holding it in one hand. The reverse shot of the face of the sidekick shows her holding it with both hands.
Continuity mistake: In the restaurant where Andy is giving her friends presents, she hands her friend a little clear case of Clinique products, but when she's putting them in her friend's hand, she is also holding a blue box when she wasn't before.