Trivia: Despite what the ending shows, the movie's producers originally had no intention of creating a sequel. As director Robert Zemeckis reveals in an interview on the DVD releases, the whole finale was intended as a joke. After the immense popularity of the movie, however, Zemeckis and producer Bob Gale realised that they had to create a sequel and connect it to the "joke" ending of the first one. Once a sequel was in the works, "To Be Continued" was then added to the home video release of the first film.
Trivia: 'Emmett' Brown's name is 'time' spelled backwards and pronounced as two syllables, 'em-it'.