Die Hard
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Deliberate mistake: For Hans Gruber's iconic death scene, Alan Rickman's fall was filmed at high speed (for slow-motion playback) against a green screen, and the skyscraper perspective footage was added later as background. However, while Rickman falls away from the camera in slow motion, papers are fluttering around him in the background at normal speed. This was done deliberately to make the shot even more surreal.

Charles Austin Miller

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Continuity mistake: When the terrorists launch the rocket at the RV, they break the same window of the building twice. (01:11:55)

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Trivia: During filming, Alan Rickman was found proficient at mimicking American accents; the scene in which McClane and Hans Gruber meet was then inserted.

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Question: Can someone please explain the scene where McClane and Hans are alone near the roof. Hans says his name is "Bill Clay" and the camera zooms in on a board with the name Clay on it. What is the significance of this? Does this give Hans away? And if so how?

Answer: No, this doesn't give Hans away - the zoom represents McClane checking the board out - getting proof that there is indeed a person in the building with that name (listed as W. Clay, for William). Hans has obviously done his homework, but McClane doesn't trust him anyway, hence the trick with the empty gun.

Tailkinker Premium member

The zoom to the board occurs before McClane turns around to glance at it. Most likely Gruber was improvising here - he heeded a name, scanned the board quickly and picked one off it.

He doesn't turn - the name board is just behind Hans to his left, in John's direct eyeline.

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