private static void SeenByAll(MovieFan[] movies, out MovieContainer seenbyall)
        {
            seenbyall = new MovieContainer(MaxNumberOfFans);
            MovieContainer placeholder = new MovieContainer(MaxNumberOfFans);
            for (int i = 0; i < FileCount-1; i++)
            {
                for (int j = 0; j < movies[i].Movie.MovieCount; j++)
                {
                    for (int k = 0; k < movies[i+1].Movie.MovieCount; k++)
                    {
                        if (movies[i].Movie.GetMovie(j).Equals(movies[i+1].Movie.GetMovie(k)) && !seenbyall.Contains(movies[i].Movie.GetMovie(j)))
                        {
                            placeholder.AddMovie(movies[i].Movie.GetMovie(j));
                        }
                    }
                }
                seenbyall = placeholder;
                placeholder = new MovieContainer(MaxNumberOfFans);
            }
        }