Alternate Ending

          One of  my favorite movies was Back To The Future 2. In the movie the main character Marty Mcfly goes with Dr.Brown to the future in his flying Delorean time machine. When they get to the future Marty picks up a sports almanac so that when they go back to the past he can place bets knowing he'll win. Then the old bully (Biff) picked up the book and stole the time machine to give it to his younger self in the past. Biff then becomes very rich and marries his Marty's mother. Marty goes back and time and stops the old Biff from giving the book to his younger self. An alternate ending for this movie if Marty never went back in time to stop old biff. The the world would have never been peaceful or safe. Marty's life would be awful and he'd never see his girlfriend Jenifer again. This way the end of the movie would be sad and leave you wondering, what if..