A Million Ways to Die in the West (2014)

Factual error: The movie is set in 1882, however there is a scene where he meets Doc Brown with his DeLorean. Back to the Future Part III took place in 1885.

Continuity mistake: When Clinch and his gang start to chase Albert, from his house, many of the sheep start running and moving out of the way, even kicking up dust. When the camera angle changes, none of the sheep are moving and there's no kicked up dust.

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Deliberate mistake: While done for comedic effect, the ram's penis as we see it is not what a real one looks like, most noticeably is the missing urethral process.

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Trivia: The man Clinch shoots at the bar when he first gets to town is Ryan Reynolds, who is uncredited. Reynolds has also appeared in Seth McFarlane's "Ted" (for which he was also uncredited) and "Family Guy."

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Trivia: While talking to the Native Americans, Albert says "Mila Kunis", which translates into "fine." Mila Kunis is the actress who voices Meg in Family Guy.

Trivia: Ewan McGregor has a cameo in this film after he turned up on set to visit Charlize Theron and Liam Neeson. Charlize Theron asked him if he wanted to do it for fun, somewhat blindsiding Seth MacFarlane, who quickly got on board, not least as McGregor already had suitable facial hair as he was filming Jane Got a Gun at the time. The whole scene was done off the cuff, and he is uncredited. He's the man at the fair who gets challenged by Seth MacFarlane to explain why he's laughing and says "I don't know. He was laughing."

Anna: You're a good sheep farmer!
Albert: Oh my god, please! I suck at sheep. Louise was right, I can't keep track of them. There was a sheep in the whorehouse the last week.
Anna: Really?
Albert: Yeah. Wandered in there, and then when I went to pick it up, somehow it had made 20 dollars.

George Stark: You're late!
Albert: For what?
George Stark: Fair enough.

Edward: Hey, dude, you really shouldn't drink and horse.