Twister is a 1996 disaster film starring Helen Hunt and Bill Paxton as storm chasers researching tornadoes. It was directed by Jan de Bont. The film was based upon a script by Michael Crichton and his wife, former actress Anne-Marie Martin.
Twister also has a famous scene of a flying cow, a scene that was the subject of many parodies. The film also became the theme of a ride at Universal Orlando Resort called Twister... Ride it Out.
According to IMDb, Twister was the first movie commercially released on DVD.