Sean Connery turned down the role of Gandalf in Lord of the Rings because he didn't understand the script.
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The girl who voiced Lilo from "Lilo & Stitch" (Daveigh Chase) was also Samara from The Ring.
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In Jurassic Park, the T-Rex wasn't supposed to come through and break the glass roof of the explorer during the attack scene, subsequently producing the noticeably genuine screams from the children.
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While filming a guest appearance on Star Trek TNG, Stephen Hawking was taken on a tour of the USS Enterprise set. When he saw the Warp Core, he paused, and said “I’m working on that.”
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The iconic roar made by Godzilla was produced by rubbing a leather glove across the strings of a double bass.
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