American Outlaws (2001)

Continuity mistake: When Jesse and Frank are telling the doctor that his son was killed (right in the beginning of the movie) Jesse gained a lot of beard growth in five minutes. When they are outside talking to Zee, he has just a light beard, and then when they go inside he has a heavier one.

Continuity mistake: After Zee gets up from the bed and the doctor comes into the room he closes the door, but when they show the doctor again the door behind him is open.

Factual error: Jesse James' mother in real life outlived him by several years following his murder.

Loni Packwood: I say this is the last straw. I came back from the war, my farm was burned down, my cows was dead. And now my wife's run off with my cousin Jeb. That son of a bitch. He took my dog.

Frank: That Zerelda turned into a hell of a woman, eh?
Jesse James: Oh yeah.
Frank: "Big and older"?
Jesse James: You can shut up now, Frank.
Frank: You are a charmer.
Jesse James: I swear to god I will shoot you in your sleep.
Frank: Next time try "Fat and haggard".

Jesse James: So we got a plan?
Bob: Yeah, my plan of lying here pissing myself seems to be working mighty fine, thank you.