BMW Gold List.
Just for something different, how about something positive by nominating dealers that are good to deal with as opposed to the black list for bad experiences.
My nomination is Brisbane BMW. I purchased an approved used car from them a few years ago and recently purchased a new e92 335 from them.
This has given me contact with their used car, service,spare parts, and new car sales people. Their customer service, friendliness and professionalism has always been first class for me, even though I consider myself to be very fussy and particular when it comes to my cars.