I find during rehearsals, especially early, it is important to get some good strong character work in before we get to blocking. Usually this means a round table discussion on each character, how I view the character and how the actor views the character - and where to go with that information. It gives the actor a basis to start, and helps motivate a lot of the blocking to come.

I agree wholeheartedly with Bernie and use the same tips for directing. I think one of the most important things to remember is respect, treat an actor with the same respect you expect them to give you and all will go well. The only problem I have experienced that drove me crazy as a director is: when a director is an actor in your performance and butts in while you are giving verbal direction. Oh boy, it wasn't pleasant, but I let her continue, thanked her politely then, after the rehearsal I spoke to them privately, as to not embarrass them in front of the others. There is now a silent understanding/respect with this person when I direct and she is onstage and when she directs and I am onstage. Great tips though Bernie!