Visible crew/equipment: When Harold meets with Professor Hilbert in his office, as Hilbert says, "I've been over it again and again, and I know how hard this is," the reflection of a crewmember, wearing a black shirt and baseball cap, is seen moving behind Hilbert.

Continuity: When Harold first meets Ana there is a floury handprint on the front of her apron (on her chest) that disappears and then reappears.

Continuity: 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: when Will Ferrell goes back to Dustin Hoffman's office in the morning Will sits down and there is a trench coat jacket on the back of the seat Will is siting on when it goes between shots it is gone.

Continuity: When Will Farrel meet Dustin Hoffman are in his office and he's asking questions about Will's life, Dustin is eating yogurt and got a stain on his tie knot. Camera changes shot, it's gone, but the stain is back again in the next shot.

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: 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.