Foremost among these is Twister, the 1996 movie about tornadoes. It stands out for a few reasons. First, it’s just a banging movie. Second, it’s kind of an unofficial sequel to Jurassic Park. It originated as a visual effects proof of concept put together at Steven Spielberg’s request by Industrial Light & Magic, which had done the digital dinos for Jurassic Park. Spielberg was originally attached to direct it, produced it through Amblin Entertainment, and the initial screenplay was co-written by Jurassic Park author Michael Crichton.