Quote:
Originally Posted by
btlaxripper 
I knew this, but I don't know why. Anyone know the reason for this?
george lucas would have loved to take over all aspects of making the films both production and directing.
however, from his experience with A New Hope, he wanted someone to take over direction as that would make things more efficient in making the film within the time constraints.
Return of the Jedi, he also picked a director, but the director was not as competent in working with actors and having to account for computer graphics to be put in later so basically George lucas had to hand hold him.
Lucas made screenplay for all 3