Gurdjieff was certainly an interesting character, although his writing is impenetrable. Ouspensky is easier to read and writes a lot about Gurdjieffs methods. From my experience there is a cult like following of the principles though when in reality there is no single truth. You find your own truth. There are a lot of shady characters out there who profess to be Gurdjieff followers.
RE: The life of George Gurdjieff