James Cameron, the director of franchises like Terminator and Avatar, reveals he almost directedJurassic Park. Michael Crichton's original novel had been a screenplay first, but when he was turning it into a book, Steven Spielberg found out about the sci-fi horror idea. The Jaws director was eventually given the chance, and he made one of the most famous movies of all time. But if Crichton and Spielberg hadn't been close, Cameron would probably have gotten the rights to make Jurassic Park.