Will Ferrell voiced Felicity Shagwell for a single scene in Austin Powers 2.
The work that goes into the creation of even a terrible movie is mind-boggling - all the disparate filmmaking disciplines coming together in the hope of producing something that leaves audiences walking away entertained and even moved.
Most film fans love hearing inside baseball stories about their favourite movies - namely those fascinating behind-the-scenes tales which demonstrate all the toil that went into bringing the film to life.
But sometimes a piece of movie trivia really only confirms that which, on some level, you probably already knew.
Whether consciously or below-the-surface, there's a good chance your brain picked up on these fascinating cinematic factoids, even if you perhaps needed it to be confirmed by Reddit, Twitter or, well, articles like this.
Movies are nothing if not supremely sensory experiences where audiences are invited to take in a wealth of sound and imagery all at once, and so amid the bombardment of it all, your brain probably figured these things out even if they didn't immediately leap out at you during the moment.
But if you did actively pick up on these slivers of behind-the-scenes information, then bloody well done indeed...
10. Mysterio Misremembered Tony Stark's B.A.R.F. Presentation - Spider-Man: Far From Home
Mid-way through Spider-Man: Far From Home, Quentin Beck aka Mysterio (Jake Gyllenhaal) finally pulls his big heel turn, revealing that he's an ex-Stark Industries employee with a major chip on his shoulder about Tony Stark (Robert Downey Jr.) firing him.
More to the point, he bitterly recalls the time that Stark took his groundbreaking holographic illusion tech and renamed it B.A.R.F., much to the amusement of the assembled conference crowd he showed it off to.
While most fans will remember that B.A.R.F. was first revealed in Captain America: Civil War, what you might've forgotten is that Stark's presentation of B.A.R.F. to the crowd wasn't summarily laughed at like Beck remembers.
Rather, the audience was silent when Stark announced the acronym, and so we're led to conclude that an enraged Beck misremembered the incident in his vengeance-poisoned mind.
If your brain was telling you that the Civil War scene had been retroactively tweaked, you were right - it was altered to reflect Beck's status as an unreliable storyteller.