The T-Rex Walk From Jurassic Park Was A Plucked Guitar String
What makes the original Jurassic Park so freakin' great is the incredible level of effort and attention to detail that went into the visual effects. Steven Spielberg filmed most of it with animatronic dinosaurs, puppets, and Jeff Goldblum's actual chest hair, relying on CGI a mere five times to continue and improve upon his legacy of scaring the hell out of children for huge sacks of money.
It's thanks to that attention to detail that Spielberg and crew managed to turn a shot of a plastic cup into one of the most ominous and memorable moments in movie history. We're talking about the iconic scene in which the cup of water in the jeep ripples, signaling to the audience that it's time to clench up, because Big Mama T-Rex is about to stealth-stomp her way out of a nearby thicket of trees and eat someone whose name didn't receive top billing.
These cups have more personality than Jurassic World's leads.
Turns out that this effect owes everything to the sick bass line of '70s pop supergroup Earth, Wind and Fire. The story goes like this: Spielberg was driving along in his car one day, grooving to a tasty jam, when he noticed that his rear view mirror was vibrating with the bass. Because Spielberg is Spielberg, he thought, "Hey, this would be a great way to let people know a big-ass monster is coming." Blasting "Shining Star" at full volume next to a glass of water wouldn't cut it, though -- they tried that. In fact, hey tried various methods and talked to different sound experts, but nothing could get the perfectly circular ripples Spielberg was looking for. Even Kubrick would have said, "Bro, it's just a water cup. Let it go."
Or, alternatively, terrorized the water until it reacted accordingly.