While the list is always changing, the top films have remained quite unchanged for a number of years now. Their top-rated movies list is compiled of films that have been rated by millions of viewers. IMDb remains one of the most popular movie information sites on the internet. In that sense, IMDb's list of the top-rated films of all time might be among the best of its kind. However, the closest thing to a definitive ranking is a list based on audience ratings. What are the best movies of all time? Ranking the best movies ever made is a pretty impossible task.