awellhungboi: Be warned, guys. Salo is not for the faint of heart! Although I think it's a great film. (And, for the record it's set in fascist Italy, not Germany) I really liked Pasolini's version of the Decameron and Arabian Nights too.
Criterion used to have Salo available on DVD--but it's out of print now. You could probably find it on Ebay.
I don't remember noticing any of the cocks in the films.
Since we're discussing art films, Peter Greenway's Propsero's Books has more male and female nudity than just about any other movie, including some rather big guys.
Also in the middle of Pola X there's an inexplicable, and quite gratuitous, but very explicit sex scene. The guy in that is pretty long.
Oh, I thought of one more. In Mike Leigh's Naked, there's a brief nude scene of the lead actor David Thewlis naked. He's in shadows, and moving, and I was drunk when I watched it many years ago, but it looked to me at the time that he was pretty well hung.