There a nude woman in Saw last year, you have to sign a form before going in which basically states you may be exposed to nudity, strong language, violent scenes etc. and there not lying, It all depends which actors are in that maze on how extreme it is, out of all three I have done the actors in Saw last year were just on a whole another level and they did everything and anything they were allowed!
EDIT - I can confirm I was stripped to my boxers last year in saw and things just got more extreme as it went on