Although I think Christopher Lee was brilliant, his voice wasn't as I imagined Saruman's. Very powerful but not subtle and honeyed. I can't remember the name of the actor in the BBC radio version but I think he got the tone just right. Nevertheless I found Lee's interpretation convincing. I wonder how much of his speech at Orthanc will be in the EE.
I am afraid that little magic was used against the hobbits - they are cowed not enchanted I feel. Peaceful communities coexisting with little formal organisation and government are easy prey for those with more cynicism and aptitude for manipulation and the veneer of authority to intimidate. Just a variation on a standard con trick really....