I like when I have to act and direct; then, when you have to dub, you're by yourself in front of the wall, and I'm always scared that you're not good like when you are in real when you act.
If you have a script that's not great, if you have a great director, you can make a great movie, but if you have a great script with a director who's not good, never are you going to have a good movie.