The Day the Earth Stood Still (2008)

Continuity mistake: When the scientists are walking through the fog towards the sphere shortly after it has landed in Central Park, we see them walk through many lines of trees before reaching the sphere. Camera cuts to a different angle, when the fog has all cleared and we briefly see behind the scientists and it only shows one line of small trees quite a bit away, not the lines of trees they were walking through before.

Polygraph Operator: I'm going to ask you a series of control questions. Are you currently in a seated position?
Klaatu: Yes.
Polygraph Operator: Are you human?
Klaatu: My body is.
Polygraph Operator: Do you feel pain?
Klaatu: My body does.
Polygraph Operator: Are you aware of an impending attack on the planet earth?
Klaatu: You should let me go.

Trivia: When Klaatu is shown on the tv as an escaped convict, the phone number shown to call to report him is not the usual 1-800-555 number, rather it is 1-800-472-0391 which is the Alaska Weather Information Hotline.

Question: Is Mr. Wu's grandson an alien like him? When Helen asks him if he's one of them, his response seems to suggest that he's dodging the question.