Continuity mistake: The social worker takes "the brother" to stay for a while at a female friend's place. Her son, "little Earl" has a bandage on his left knee. He peels the bandage off and sets it on the floor to show "the brother alien" his injury. A medium shot shows there is no bandage on the floor. The "alien" puts his hand on the boy's knee, and heals it. The very next shot the bandage is back on the boy's knee and the scene continues.
Continuity mistake: During the Grand National, the leading horse unseats its rider at the third fence (jockey with pink and black spots), but just a few minutes later the same horse and jockey combination are back up with the pace.
Continuity mistake: When the coach instructs the guys telling them that their 'pistols don't shoot blanks', the clipboard under his armpit flips around at the cut. (00:06:00)
Continuity mistake: When the first flying arrow stabs D'Arnot's butt, it lands diagonally. When the angle changes it's horizontal.