Factual error: When Diane visits her father in prison, she hands him a pen, but visitors in prison are very closely searched - no way could a visitor give a prisoner a pen of any kind (they're contraband for prisoners as they can be used as weapons), let alone a heavy pen like that one. Even if he were in a minimum-security prison (which his orange jumpsuit seems to indicate he's not) this rule would still apply.
Say Anything... (1989)
1 factual error - chronological order
Directed by: Cameron Crowe
Starring: John Cusack, Lili Taylor, John Mahoney, Ione Skye
Continuity mistake: Right after Lloyd gets his nose broken while kickboxing, Diane begs him to take her back. As they converse, the string of drying blood under Lloyd's nose changes from being to the right of his nostril to directly under it.
Lloyd Dobler: Why can't you be in a good mood? How hard is it to decide to be in a good mood and be in a good mood once in a while?"
Constance: Gee, it's easy.