Ending a movie on the right note is no easy feat since filmmakers must consider many factors before bringing the curtain down. Should the hero save the day, or go out in a blaze of glory? Are there sequels to set up, or must everything be tied up neatly?
Any director worth their salt knows that dropping the ball right at the end spells legions of unhappy fans and irate reviewers, aggrieved that they've just invested two and a half hours of their time into something with a dud payload, and no doubt this is why so many of them take several stabs at the grand finale.
Many filmmakers shoot multiple endings to see which one turns out best before putting the final cut together, and most of the time they select the right one, with the rejected conclusions ending up among the Blu-ray extras.
There are, however, times when the ending that made the grade was inferior to one consigned to the bonus features. Seeing what might have been can be frustrating, but fans can at least take solace from the fact the movie ended right in a parallel universe.