CGI and green screen are two things most commonly associated with big blockbusters, the type of genre fare that features aliens, enormous explosions, gravity-defying stunts and interplanetary travel.
There are some things that just can't convincingly be portrayed without an assist from a team of special effects whizzes, and while the likes of Iron Man's suit and Henry Cavill's mouth have clearly been created on a computer or two, CGI is used in a lot more places than you could possibly imagine.
At this point, there are several well-known examples of this - scenes of actors driving in cars are commonly shot on a soundstage and not on the road, and often, city backdrops and distant skylines have been rendered in post-production.
But movie CGI goes much deeper than even these small details, and over the years, things as trivial as a walkie-talkie or a napkin were not slotted into a film in as simple a manner as you might expect.
So for those who think CGI is an overused filmmaking crutch, check out these ten examples - you might just change your mind.