Robert Zemeckis's 1985 comedy sends Marty McFly thirty years into his parents' past, where undoing his own accidental sabotage of their romance becomes a race against his own existence. Recast five weeks into shooting, rewritten forty times before a studio would touch it, it turned into the biggest hit of its year on a modest budget, and the mechanics still hold.
Steven Spielberg's 1982 film, written by Melissa Mathison from a rejected Columbia Pictures script, follows a boy named Elliott who hides and befriends a stranded alien while government agents close in. Shot in sequence over four months on a $10.5 million budget, with a Carlo Rambaldi animatronic creature voiced by a chain-smoking retiree, it overtook Star Wars to become the highest-grossing film ever made and held that record for eleven years, until Spielberg's own Jurassic Park surpassed it.
Steven Spielberg's 1993 adaptation of Michael Crichton's novel follows a Costa Rican dinosaur park that collapses once its systems, and its owner's judgement, both fail during a single act of sabotage. Combining Stan Winston's animatronics with Industrial Light & Magic's early computer-generated dinosaurs on a budget reported as either $56 or $63 million, it grossed over $914 million on its original release, briefly the highest-grossing film ever made, and won three Academy Awards for its sound and visual effects.
Robert Zemeckis's 1988 noir comedy places a toon-hating private eye in an alternate 1947 Hollywood where cartoon characters live alongside humans, tasking him with clearing Roger Rabbit of a murder. Produced by Disney and Amblin with animation supervised by Richard Williams, it required Disney to negotiate cameo rights with Warner Bros. and other studios, and became the second-highest-grossing film of 1988.