5. The Godfather
Admittedly, this one may take even longer than twenty years to see the light of day, but once everyone involved with the original production is dead (or broke) The Godfather is the perfect project for a higher-brow director looking to make a statement. Think maybe a David Fincher or Baz Luhrmann of the future. Out of all of the all-time classics of cinema, this one seems more likely to get done than any of its peers. Maybe someone will hit Citizen Kane or The Graduate, but there's something about the simple, yet epic, story of The Godfather that makes it a better choice for a filmmaker looking to make some noise in the film community while still making something that could probably connect with mass audiences. Should a movie like this ever get remade? Probably not. But that hasn't stopped anyone yet. Hollywood hasn't shown any evidence that it can tackle a project like this and create anything of any real merit, but if the complexity of the characters and the power of the emotions and themes can be maintained then there's no reason why a movie like this couldn't at least be interesting. It will be all but impossible for anyone to ever make anything as good as the original, but there's no reason why someone couldn't at least give it a shot somewhere down the line. And hey, if they redo the whole trilogy, maybe they can make a third film that sticks closer to the original concept, with Michael and Tom Hagen butting heads over who has the power in the family.