The movie can be seen as a highly innovative family adventure that allows us to learn a great deal about how much fun can be had with a family who want to grow up together. It can be seen as a rich family adventure that can be developed over time and can be developed over time in this family."

As to who can play who? Stiller can play all of the father characters. Zemeckis can play all of the son characters. Geffen can play all of the brother characters.