During our last production of Spine I was asked a few times what the role of the Director is.  The answer is that it can vary from company to company, but in The Green Room Productions it goes something like this:

As the Director, when I read a great play it captures my imagination.  Usually the story visually unfolds in my head and if I can see it working well on our stage I will decide to produce it. 

The next step is to cast the play.  The Green Room Productions has a pool of very talented actors so I will try to cast from them.  If this isn't possible then I will hold auditions to find other actors to suit the roles.