Continuity mistake: When Harold first meets Ana there is a floury handprint on the front of her apron (on her chest) that disappears and then reappears.
Visible crew/equipment: In the last shot of the scene near the beginning, when Harold tells the Polish lady at the bus stop that he can hear "Harold thought it was a Wednesday," the boom mike dips in for a split second.
Continuity mistake: At the end of the scene when Ana tries to give Harold the cookies, you see the box on the counter. Then the shot changes to Ana, then switches back to Harold and they are gone.
Continuity mistake: When Queen Latifah is in Emma Thompson's apartment for the first time, she is holding a bowl in one hand, with her right arm at her side. When she asks Thompson about her smoking, the shot cuts to a different view, and she is holding the bowl with both hands. Her hands were visible in the immediately preceding shot, so there was no time for her to move them.
Continuity mistake: When Harold raises the cookie to his mouth, his thumb is above the cookie and his fingers are under it. A second later, in the close-up shot of him biting the cookie, his fingers are above and his thumb is under. (00:43:25)