The Bitter Tears of Petra Von Kant.
Even by Fassbinder's standards this is full on gayness. Paul Morrissey with a professional cast. It's basically a remake of All About Eve and there's a bit when Margit Carstensen tries to walk across the screen in an impossibly tight dress that I swear is one of my favourite moments in film ever. My cultural life would be so much more straightforward if I had a thing for cock.