One of Natalie's worst delivered lines I thought was Ep I on Coruscant "We must do something quickly to stop the Federation." On The Beginning, I believe that scene is shown to be filmed first and then we see George talking about how great of an actor Natalie is, having only needed two takes for that scene. George just can't distinguish good dialog from bad, it's all the same to him while slight cg differences will be glaringly obvious to him. He probably can't even tell the difference between Boba Fett's new and old voice.