Here is one of the better documentaries that has been made and televised. It's not perfect by any means but it is more representative of Freemasonry
than any of those posted thus far.
Not a doc, but watch The Sound of My Voice. Interesting looking into secret society/cult mindset. I've seen it way too many times. Mainly because I
have a girlcrush on Brit Marling. Intensely interesting film though.