Arthur (1981)

Continuity mistake: Arthur and Hobson run outside to watch Linda after she steals a tie. Hobson is holding a bag with a box in it. Later in the scene, when Arthur is putting Linda in his limo, he hands her the box. Two problems. First, we never see the box being taken out of the bag. And second, the box presumably contains Arthur's purchases. Why would he give it to her? In the next scene, Linda's father opens the box, and it contains the stolen tie.

Arthur: Hobson, did you see that?! That girl stole that tie!
Hobson: Yes...
Arthur: It's the perfect crime: girls don't wear ties...well it's not a perfect crime, but it's a pretty good crime...
Hobson: Perhaps if she had murdered the tie it would be a perfect crime.

Lee Donovan

Trivia: Dudley Moore received his only Academy Award nomination for his role as Arthur Bach in this movie.