Limite (Peixoto, 1931)
Insiang (Brocka, 1976)
Revenge (Shinarbayev, 1989)
I'll watch them all, eventually, but I have to pick one in an hour or so. Leaning towards Revenge because Kazakh New Wave seems closest to my, erm, wavelength, but I don't know much about either of them.
On a related note, the Scorsese vs. Scorsese poll should read Director vs. Curator - I would vote for the latter.