Following on from Michael Ford's post on length of Dialogues, it made me want to ask about what happens between dialogue and what rules of thumb people might use to decide what Action they put in there. I've just written a scene to a screenplay where there is about ¾ of a page of dialogue where I have no Action lines between them. It’s an important scene that reveals some key traits of both the characters involved. My approach is, if the action is important (developing character or plot etc etc etc) I’ll put something in. I look back on it and think ok show don't tell – and where I can write an action that might replace or enhance the spoken words I try but wont force it if it feels wrong… but then having recently directed a film that had no dialogue in it, but ad libs, I now wonder if the director and actors would want the freedom to work out their own accompanying actions? What do you do?