And it happened at the perfect time.

The smash hit Knives Out has been hailed as a masterfully constructed murder mystery/whodunit, and even scored a Best Original Screenplay Oscar nomination, but one of the most iconic shots in the film was actually a bit of a fortuitous accident. Writer/director Rian Johnson meticulously constructed Knives Out from start to finish to be a thrilling, rewatchable joy ride. He was so specific in the building of the film’s narrative that he knew he wanted to break the tension of the film’s opening shot—which is a dramatic showcase of Harlan Thrombey’s mansion—with a …

Planes, Trains And Automobiles' ending is the perfect capper, but it turns out it was pieced together after a negative test screening.

It's Always Sunny In Philadelphia's theme "Temptation Sensation" has become an iconic part of the show - but its use was a happy accident.