Only theatre arts. Y'know, you have to take acting 101, no more than that. No that's unique, but I think I do have a deep appreciation for acting and talent. The thing is to allow them to do what they do best and try to create an atmosphere where they feel comfortable, and explain the material. I do have a lot of respect for them, because I'm so inhibited.
Some actors are too, but when they get into character, they just let it all hang out.
They are vulnerable. I think one of the things is time. If you have a quick shooting schedule, there's not enough time to play. One or two takes and you have to move on. It helps to have a good actor, because it takes time to set up the scene, and you have five pages to shoot a day.